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For the current region of Chad, see Tibesti Region.

The Tibesti Mountains are a mountain range in the central Sahara, primarily located in the extreme north of Chad, with a small portion located in southern Libya. The highest peak in the range, Emi Koussi, lies to the south at a height of 3,415 meters (11,204 ft) and is the highest point in both Chad and the Sahara. Bikku Bitti, the highest peak in Libya, is located in the north of the range. The central third of the Tibesti is of volcanic origin and consists of five volcanoes topped by large depressions: Emi Koussi, Tarso Toon, Tarso Voon, Tarso Yega and Toussidé. Major lava flows have formed vast plateaus that overlie Paleozoic sandstone. The volcanic activity was the result of a continental hotspot that arose during the Oligocene and continued in some places until the Holocene, creating fumaroles, hot springs, mud pools and deposits of natron and sulfur. Erosion has shaped volcanic spires and carved an extensive network of canyons through which run rivers subject to highly irregular flows that are rapidly lost to the desert sands.

Tibesti, which means "place where the mountain people live", is the domain of the Toubou people. The Toubou live mainly along the wadis, on rare oases where palm trees and limited grains grow. They harness the water that collects in gueltas, the supply of which is highly variable from year-to-year and decade-to-decade. The plateaus are used to graze livestock in the winter and harvest grain in the summer. Temperatures are high, although the altitude ensures that the range is cooler than the surrounding desert. The Toubou, who were settled in the range by the 5th century BC, adapted to these conditions and turned the range into a large natural fortress. They arrived in several waves, taking refuge in times of conflict and dispersing in times of prosperity, although not without intense internal hostility at times.

The Toubou came into contact with the Carthaginians, Berbers, Tuaregs, Ottomans and the Arabs, as well as the French colonists who first entered the range in 1914 and took control of the area in 1929. The independent spirit of the Toubou and the geopolitics of the region has complicated the exploration of the range as well as the ascent of its peaks. Tensions continued after Chad and Libya gained independence in the mid-20th century, with hostage-taking and armed struggles occurring amid disputes over the allocation of natural resources. The geopolitical situation and the lack of infrastructure has hampered the development of tourism.

The Saharomontane flora and fauna, which include the rhim gazelle and Barbary sheep, have adapted to the mountains, yet the climate has not always been as harsh. Greater biodiversity existed in the past, as evidenced by scenes portrayed in rock and parietal art found throughout the range, which date back several millennia, even before the arrival of the Toubou. The isolation of the Tibesti has sparked the cultural imagination in both art and literature.

Contents

The Tibesti Mountains are named for the Toubou people, also written Tibu or Tubu, that inhabit the area. In the Kanuri language, tu means "rocks" or "mountain" and bu means "a person" or "dweller," and thus Toubou roughly translates to "people of the mountains" and Tibesti to the "place where the mountain people live".

Most of the mountain names are derived from Arabic as well as the Tedaga and Dazaga languages. The term ehi precedes the names of peaks and rocky hills, emi precedes those of larger mountains, and tarso precedes high plateaus and gently-sloping mountainsides. For example, the Ehi Mousgou is a 2,849-meter (9,347 ft) stratovolcano near Tarso Voon. The name Toussidé means "that which killed the Tou," as in the Toubou, reflecting the danger of the still active volcano. The name of Bardaï, the principal town in the range, means "cold" in Chadian Arabic. In the Tedaga language, the town is known as Goumodi, which means "red pass," signifying the color of the mountains at dusk.

Location

False-color, exaggerated-relief satellite image of the Tibesti Mountains viewed from the south

The mountains lie on the border between Chad and Libya, straddling the Chadian region of Tibesti and the Libyan districts of Murzuq and Kufra, around 1,000 kilometers (620 mi) north of N'djamena and 1,500 kilometers (930 mi) south-southeast of Tripoli. The range is adjacent to Niger and located approximately halfway between the Gulf of Sidra and Lake Chad, just south of the Tropic of Cancer. The East African Rift is 1,900 km (1,200 mi) to the east and the Cameroon line lies 1,800 km (1,100 mi) to the southwest.

The range is 480 km (300 mi) in length, 350 km (220 mi) in width, and spans 100,000 km2 (39,000 sq mi). It draws a large triangle with sides of 400 km (250 mi) and vertices facing south, northwest and northeast in the heart of the Sahara, making it the largest mountain range of the desert.

Topography

The highest peak in the Tibesti Mountains, as well as the highest point in Chad and the Sahara Desert, is the 3,415-meter (11,204 ft) Emi Koussi, located at the southern end of the range. Other prominent peaks include Pic Toussidé at 3,296 m (10,814 ft) and the 3,012-meter (9,882 ft) Timi on its western side, the 2,972-meter (9,751 ft) Tarso Yega, the 2,925-meter (9,596 ft) Tarso Tieroko, the 2,849-meter (9,347 ft) Ehi Mousgou, the 2,845-meter (9,334 ft) Tarso Voon, the 2,820-meter (9,250 ft) Ehi Sunni, and the 2,774-meter (9,101 ft) Ehi Yéy near the center of the range. The 3,376-meter (11,076 ft) Mouskorbé is a peak notable for its height in the northeastern part of the mountain range. The 2,266-meter (7,434 ft) Bikku Bitti, the highest point in Libya, is nearby, on the other side of the border. The average elevation of the Tibesti Mountains is about 2,000 m (6,600 ft); sixty percent of its area exceeds 1,500 m (4,900 ft) in elevation.

Satellite image of Emi Koussi

The range includes five shield volcanoes with broad bases whose diameter can reach 80 km (50 mi): Emi Koussi; Tarso Toon, which rises 2,575 m (8,448 ft) above sea level; Tarso Voon; Tarso Yega; and Tarso Toussidé, which culminates in the peak of the same name. Several of these peaks are topped with large calderas. Tarso Yega has the largest caldera, with a diameter of 19 to 20 km (12 to 12 mi) and a depth of approximately 300 m (980 ft), while Tarso Voon has the deepest caldera, with a depth of approximately 1,000 m (3,300 ft) and a diameter of 12 to 13 km (7.5 to 8.1 mi). They are complemented by four large lava dome complexes, 1,300 to 2,000 m (4,300 to 6,600 ft) high and several km wide, all located in the central part of the mountain range: Tarso Tieroko; Ehi Yéy; Ehi Mousgou; and Tarso Abeki, which rises to 2,691 m (8,829 ft) above sea level. These volcanic complexes are now considered inactive, but according to the Smithsonian Institution were active during the Holocene. Tarso Toussidé is an active volcano that has spewed lava over the past two millennia. Gases escaping from fumaroles on Toussidé are visible when evaporation is low. The volcano's crater, Trou au Natron, is 8 km (5.0 mi) in diameter and 768 m (2,520 ft) deep. On the northwest side of Tarso Voon is the Soborom geothermal field, which contains mud pools and fumaroles that vent sulfuric acid. The sulfur has stained the surrounding soil bright colors. Fumaroles are also present at the Yi Yerra hot springs on Emi Koussi. Tarso Tôh was an active volcano in the early Holocene. The volcanic area of the Tibesti Mountains is located entirely in Chad; it covers about a third of the total area of the Tibesti Mountains and is responsible for between 5,000 and 6,000 km3 (1,200 and 1,400 cu mi) of rock.

  • The other four shield volcanoes of the Tibesti Mountains
  • Satellite image of Tarso Toon (top right) and Ehi Yéy (bottom left)

  • Satellite image of Tarso Voon

  • False-color satellite image of Tarso Yega (top)

  • Satellite image of Tarso Toussidé showing Pic Toussidé (the center of the dark spot) and Trou au Natron crater (top left)

The rest of the Tibesti Mountains consists of volcanic plateaus (tarsos), located between 1,000 and 2,800 m (3,300 and 9,200 ft) elevation, as well as lava fields and ejecta deposits. The plateaus are larger and more numerous in the east: the 7,700 km2 (3,000 sq mi) Tarso Emi Chi, the 6,500 km2 (2,500 sq mi) Tarso Aozi, the 3,000 km2 (1,200 sq mi) Tarso Ahon to the north of Emi Koussi, and the 1,200 km2 (460 sq mi) Tarso Mohi. In the center is Tarso Ourari at about 700 km2 (270 sq mi). To the west, in the vicinity of Tarso Toussidé, is the aforementioned Tarso Tôh, a small plateau at just 490 km2 (190 sq mi), and the even smaller Tarso Tamertiou at 98 km2 (38 sq mi). The plateaus are strewn with volcanic spires and are separated by canyons that have been formed by the irregular flow of wadis. After often-violent rains, they see the formation of ephemeral streams and flora. The southern, southwestern and eastern slopes of the mountain range have a gentle rise, while the northern slope of the range is a cliff overlooking the vast Libyan desert pavement known as the Serir Tibesti.

Hydrology

Satellite image of Tibesti wadis (enneris)

Five rivers in the northern half of the Tibesti Mountains flow to Libya, while the southern half belongs to the endorheic basin of Lake Chad. However, none of the rivers travel long distances, as the water evaporates in the desert heat or seeps into the ground, although the latter may flow great distances through subterranean aquifers.

The wadis in the Tibesti are called enneris. The water mainly originates from the storms that periodically rage over the mountains. Their flow is highly variable. For example, the largest wadi, named Bardagué (or Enneri Zoumeri on its upstream portion) and located in the northern part of the range, recorded a flow of 425 m3/s (15,000 cu ft/s) in 1954, yet over the next nine years it experienced four years of total drought, four years of flow less than 5 m3/s (180 cu ft/s) and one year where three different flow rates were measured: 4, 9 and 32 m3/s (140, 320 and 1,130 cu ft/s).

A guelta on the Ennedi Plateau, 500 km (300 mi) southeast of the Tibesti

Two other major rivers cut into the mountains: the Enneri Yebige flows northward until its riverbed disappears on the Serir Tibesti, while Enneri Touaoul joins the south-flowing Enneri Ke to form Enneri Miski, which then disappears in the plains of Borkou. Their basins are separated by an 1,800-meter (5,900 ft) high watershed that runs from Tarso Tieroko in the west to Tarso Mohi in the east. The Enneri Tijitinga is the longest wadi in the range, flowing some 400 km (250 mi) southward. It forms in the west of the range and peters out in the Bodélé Depression, as does Enneri Miski a little further to the east, along with other wadis such as the Enneri Korom and Enneri Aouei. Several rivers flow radially on the southern slopes of the Emi Koussi before seeping into the sands of Borkou and then reemerging at escarpments up to 400 km (250 mi) south of the summit, near the Ennedi Plateau.

At the bottom of many canyons are gueltas, wetlands that accumulate water mainly during storms. Above 2,000 m (6,600 ft), enneri beds sometimes contain sequential pools of water that remain largely unexplored[update]. The water is replenished several times a year during flooding, and salinity levels are low. The Mare de Zoui is a small permanent body of water 600 m (2,000 ft) above sea level, located in the northern part of the mountains in the wadi of the Enneri Bardagué, 10 km (6.2 mi) east of Bardaï. Supplied by sources upstream of the wadi, in heavy rains it overflows and spills into small wetlands.

The Yi Yerra hot springs is located on the southern flank of Emi Koussi at about 850 m (2,800 ft) elevation. Water emerges from the springs at 37 °C (99 °F). A dozen hot springs are also located at the Soborom geothermal field on the northwest side of Tarso Voon, where water emerges at temperatures ranging between 22 and 88 °C (72 and 190 °F).

Geology

Satellite image of the volcanic field on Tarso Tôh, which includes 150 cinder cones, two maars and several basalt lava channels

The Tibesti Mountains are a large area of tectonic uplift that, according to contemporary theory, resulted from a mantle plume in the craton of the African lithosphere, which is about 130 to 140 km (81 to 87 mi) thick. This tectonic uplift may have been accompanied by the opening, and subsequent closure via subduction, of a rift zone. A system of regional faults, although partially obscured by the volcanic product, has two distinct orientations: a NNE-SSW alignment that could be an extension of Cameroon line, and a NW-SE alignment that could extend to the Great Rift Valley; however, the relationship between these fault systems has not been conclusively demonstrated.

The basement of the Tibesti is composed of granite, diorite and schist, one of six exposures of Precambrian crystalline rock in North Africa. These are overlaid by sandstone of the Paleozoic era, while the peaks consist of volcanic rock. The continental hotspot activity began as early as the Oligocene, although most of the volcanic rock dates from the Lower Miocene to the Pleistocene and, in places, to the Holocene. Due to the comparatively slow movement of the African plate—roughly between 0 and 20 mm (0 and 0.8 in) per year since the Lower Miocene—there is no relationship between the age of the volcanoes and their dimensions, geographic distribution or alignment, in contrast to hotspots such as the Hawaiian–Emperor and Cook-Austral seamount chains. This phenomenon is also seen in Martian volcanoes, particularly Elysium Mons. Early volcanic activity created trap basalt formations that extend tens of kilometers and stack up to 300 m (1,000 ft) thick. Basanite and andesite are also found in the volcanic layer. More recently in geologic time, volcanic activity has deposited dacite, rhyolite and ignimbrite, as well as trachyte and trachyandesite. This trend towards the production of more felsic, viscous lavas could be a sign of a waning mantle plume.

Geomorphology

Animation showing the phases of volcanic activity in the Tibesti Mountains

Volcanic activity in the Tibesti took place in several phases. In the first phase, uplift and extension of the Precambrian basement occurred in the central area. The first structure to be formed was probably Tarso Abeki, followed by Tarso Tamertiou, Tarso Tieroko, Tarso Yega, Tarso Toon and Ehi Yéy. The product of this early volcanic activity has been completely obscured by later eruptions. In the second phase, the volcanic activity moved north and east, forming Tarso Ourari and the ignimbrite bases of the vast tarsos, as well as Emi Koussi to the southeast. Thereafter, during the third phase, the outpouring of lava and ejecta deposits increased from Tarso Yega, Tarso Toon, Tarso Tieroko and Ehi Yéy; the collapse of these structures formed the first calderas. This phase also saw the formation of the Bounaï lava dome and Tarso Voon. To the east, the lava flows formed the large plateaus of Tarso Emi Chi, Tarso Ahon and Tarso Mohi. Emi Koussi increased in height. The fourth phase saw the formation of Tarso Toussidé and the lava flows of Tarso Tôh in the west, the collapse of the caldera on the summit of Tarso Voon and associated ejecta deposits in the center, and the decline in lava production in the east, with the exception of Emi Koussi, which continued to rise. In the fifth phase, volcanic activity became much more localized and lava production continued to wane. Calderas formed on top of Tarso Toussidé and Emi Koussi, and the lava domes Ehi Sosso and Ehi Mousgou appeared. Finally, in the sixth phase, Pic Toussidé formed on the western rim of several pre-Trou au Natron calderas, along with new lava flows, including Timi on the northern slope of Tarso Toussidé. With scarce time for erosion, these lava flows have a dark, youthful appearance.

Satellite image of the more recent lava rock, in black, with Toussidé volcano (center) and the Trou au Natron crater (bottom right)

The Trou au Natron and Doon Kidimi craters have formed even more recently, with the former dissecting the earlier Toussidé calderas. Lava flows, minor pyroclastic deposits, and the appearance of small cinder cones, and the formation of the Era Kohor crater are the most recent volcanic activities on Emi Koussi. Presently,[update] there are reports of volcanic activity in various parts of the massif, including hot springs at the Soborom geothermal field and fumaroles on Tarso Voon, Yi Yerra near Emi Koussi and Pic Toussidé. Carbonate deposits in the Trou au Natron and Era Kohor craters are also representative of more recent volcanic activity.

The study of fluvial terraces has revealed coarse sand and gravel alternating with terraces of silt, clay and fine sand. This alternation highlights repeated changes in the dominant fluvial or wind patterns in the valleys of Tibesti during the Quaternary Period. The phases of erosion and sendimentation are indicative of the climate alternating between dry and wet conditions, the latter of which fostered vegetation in the Tibesti that was likely significantly denser than that which exists today. Furthermore, the discovery of calcified charophyta (particularly of the family Characeae) and gastropod fossils in Trou au Natron indicates the presence of a lake at least 300 m (1,000 ft) deep during the Late Pleistocene. These phenomena are associated with various changes in climate, most notably during the last glacial maximum, which increased precipitation and reduced evaporation due to lower temperatures. In fact, the Tibesti supplied a considerable amount of water to the Paleolake Chad until the 5th millennium BC.

Climate

The Tibesti climate is substantially less dry than that of the surrounding Sahara Desert, but rainfall events are highly variable from year to year. In the south of the range, this variation is largely due to oscillations of the Intertropical Convergence Zone (ITCZ), which steadily moves northward toward northern Chad from November until August, accompanied by humid monsoonal air. Normally, the ITCZ repels the Harmattan, a dry trade wind that blows west or southwest from the Sahara Desert, and brings rainfall to southern Tibesti. However, sometimes the front retires early, before reaching the Tibesti, leaving its southern portion dry. In the arid northern Tibesti, where the monsoon has little influence, storms are caused by episodic Sahara-Sudanese weather systems. For example, between 1957 and 1968, Bardaï, on the northern flank of the range, saw an average of 12 mm (0.47 in) of precipitation annually, yet some years were completely dry while others saw 60 mm (2.4 in) of rainfall. In general, the range receives less than 20 mm (0.79 in) of rainfall per year. However, precipitation increases with altitude; for example Trou au Natron 2,250 m (7,380 ft) receives 126 mm (5.0 in) annually. When the rainfall coincides with low temperatures, it can fall as snow. This occurs, on average, once every seven years.

The average monthly maximum temperature is 28 °C (83 °F) in the central Tibesti Mountains, while the average monthly minimum is 12 °C (53 °F). Lows of −10 °C (14 °F) are not uncommon. Bardaï, located 1,020 m (3,350 ft) above sea level, experiences average temperatures ranging between 4.6 and 23.7 °C (40.3 and 74.7 °F) in January, between 14.4 and 34 °C (57.9 and 93.2 °F) in April, and between 19.4 and 36.7 °C (66.9 and 98.1 °F) in August. The combination of high temperatures and low humidity results in potentially high evaporation rates, ranging from 129 mm (5 in) in January to 254 mm (10 in) in May, parching many enneris before they can exit the mountain range.

Climate data for the central Tibesti Mountains (21°15′N17°45′W /21.250°N 17.750°W /21.250; -17.750), approximately 1,200 m (3,900 ft) elevation, 1901–2009
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °C (°F) 18.1
(64.5)
21
(70)
25
(77)
29.8
(85.7)
34.2
(93.5)
36.2
(97.2)
35.7
(96.3)
34
(94)
33.1
(91.5)
28.6
(83.5)
22.7
(72.9)
18.8
(65.8)
28.1
(82.7)
Daily mean °C (°F) 10.3
(50.5)
12.8
(55.1)
16.5
(61.7)
21
(70)
25.3
(77.6)
27.3
(81.2)
27
(81)
26.5
(79.7)
25.1
(77.1)
20.7
(69.3)
15.1
(59.1)
11.6
(52.8)
19.9
(67.9)
Average low °C (°F) 2.6
(36.7)
4.6
(40.3)
8.1
(46.5)
12.4
(54.3)
16.5
(61.7)
18.4
(65.1)
18.8
(65.8)
18.6
(65.5)
17.1
(62.8)
12.9
(55.3)
7.4
(45.4)
4.3
(39.7)
11.8
(53.3)
Source 1: Global Species
Source 2: University of East Anglia Climatic Research Unit

Like an island surrounded by ocean, the ecology of the Tibesti Mountains is distinguishable from that of the surrounding desert. As such, the mountains lie within their own biome, the 82,000-square-kilometer (31,700 sq mi) Tibesti-Jebel Uweinat montane xeric woodlands ecoregion, along with the Jebel Uweinat, a disjunct mountain range that also rises from the Sahara 650 km (400 mi) to the east. Much of the ecoregion remains unexplored due to its remoteness and persistent political instability, yet it is known to contain a number of endemic and endangered species. Indeed, the isolation of the region is a benefit to its flora and fauna, serving as a sort of refuge, allowing plants to grow untrammeled and animals to roam unmolested. Nevertheless, hunting is unregulated in the region, and vegetation has suffered from overgrazing in the past.

Flora

The flora in the Tibesti is Saharomontane, mixing Mediterranean, Sahara, Sahel and Afromontane vegetation. Biodiversity and endemism levels are higher in the Tibesti than in the Aïr Mountains or the Ennedi Plateau, although the vegetation's coverage is highly dependent on rainfall. Oases lie along the courses of the enneris, such as Enneri Yebige, which is virtually unexplored[update]. These oases, which are more numerous to the north and west of the range, are scattered with acacia, figs, palms and tamarisks. Most gueltas are lined with macrophytes—including smooth flatsedge (Cyperus laevigatus) and branched horsetail (Equisetum ramosissimum)—and bryophytes—including Oxyrrhynchium speciosum and species of Bryum. Egyptian acacia (Vachellia nilotica syn. Acacia nilotica) grows near these water basins. Saharan myrtle (Myrtus nivellei) and oleander (Nerium oleander) grow between elevations of 1,500 and 2,300 m (4,900 and 7,500 ft) in the western part of the range, while Nile tamarisk (Tamarix nilotica) grows at similar elevations in its northern part. Downstream, where the current of the enneris is slower and the riverbed is deeper, there are dense thickets of Athel tamarisk (Tamarix aphylla syn. Tamarix articulata) and arak (Salvadora persica).

Around the edge of the Tibesti, where the canyons exit the range, are doum palms (Hyphaene thebaica). The banks of Mare de Zoui are home to dense stands of reeds (Phragmites australis and Typha capensis), along with sedges (Scirpoides holoschoenus), sea rush (Juncus maritimus), toad rush (Juncus bufonius) and branched horsetail (E. ramosissimum), while pondweed (Potamogeton spp.) grows in the open water. Although the lake appears rich in phytoplankton, it has not been thoroughly studied. To the south and southwest of the range, between 1,600 and 2,300 m (5,200 and 7,500 ft) elevation, the wadis support woody species characteristic of the Sahel, such as Egyptian balsam (Balanites aegyptiaca), grey-leaved cordia (Cordia sinensis), red-leaved fig (Ficus ingens), sycamore fig (F. sycomorus), wonderboom (F. salicifolia) and gay acacia (Senegalia laeta syn. Acacia laeta). Chrysopogon plumulosus is the most common grass in the area. Other plants have more Mediterranean characteristics, such as globularia (Globularia alypum) and lavender (Lavandula pubescens) or the more tropical sweet Indian mallow (Abutilon fruticosum) and least snout-bean (Rhynchosia minima syn. Rhynchosia memnonia). The liverwort Plagiochasma rupestre is found around the wadis at these elevations, as are mosses of the genera Fissidens, Gymnostomum and Timmiella.

Saharomontane grasslands are found on the slopes, plateaus and the upper portions of the wadis at elevations between 1,800 and 2,700 m (5,900 and 8,900 ft). They are dominated by Stipagrostis obtusa and Aristida caerulescens, as well some Eragrostis papposa locally. In addition, shrubs represented by jointed anabis (Anabasis articulata), Fagonia flamandii and Zilla spinosa dot this environment. On the sheltered upper slopes of Emi Koussi is the endemic grass Eragrostis kohorica, named after the volcano's crater.

The vegetation above 2,600 meters (8,500 feet) consists of dwarf shrubs, which are generally limited to 20 to 60 cm (8 to 24 in) in height and do not exceed one meter (3 ft). The shrubbery consists of the species Pentzia monodiana, Artemisia tilhoana and Ephedra tilhoana. At the highest elevations of the Tibesti, tree heath (Erica arborea) grows from moist crevices formed by early lava flows, while 24 different species of moss provide substrate for the tree heath. Various genera of mosses also grow around fumaroles, including Fissidens, Campylopus, Gymnostomum and Trichostomum. Lichens, though rare in the dry climate of the Tibesti, also grow at these elevations, with green rock shield (Xanthoparmelia conspersa), scrambled-egg lichen (Fulgensia fulgens), sunken disk lichen (Aspicilia spp.) and Squamarina crassa found on the highest peaks.

Fauna

Golden jackals, similar to this specimen photographed in Israel, are present in the Tibesti.

Mammals abound in the Tibesti. Bovids include the endangered addax (Addax nasomaculatus) along with the dorcas gazelle (Gazella dorcas), rhim gazelle (Gazella leptoceros) and a significant population of Barbary sheep (Ammotragus lervia). Rodents are the most represented order of mammals, and include the spiny mouse (Acomys spp.), bushy-tailed jird (Sekeetamys calurus) and the North African gerbil (Dipodillus campestris syn. Gerbillus campestris). Also present are cats such as the African wildcat (Felis lybica) and, more rarely, the cheetah (Acinonyx jubatus), as well as several canine species, including the golden jackal (Canis aureus), fennec fox (Vulpes zerda) and Rüppell's fox (Vulpes rueppellii). The striped hyena (Hyaena hyaena) may also occupy the range. African wild dogs (Lycaon pictus) formerly roamed the range, although these populations are now extirpated. Olive baboons (Papio anubis), found as recently as 1960, are now likely extirpated as well. Bats are heavily represented in the Tibesti, including the Egyptian mouse-tailed bat (Rhinopoma cystops), Egyptian slit-faced bat (Nycteris thebaica) and the trident bat (Asellia tridens). The Cape hare (Lepus capensis) and the rock hyrax (Procavia capensis) also populate the area.

Reptiles and amphibians, on the other hand, are sparse. Snake species include the braid snake (Platyceps rhodorachis syn. Coluber rhodorachis) and the long-nosed worm snake (Myriopholis macrorhyncha syn. Leptotyphlops macrorhynchus). Among the lizards are Bibron's agama (Agama impalearis), the ringed wall gecko (Tarentola annularis) and the Sudan mastigure (Uromastyx dispar). Mid-20th-century herpetological studies noted the presence of brown frogs (Rana sp.) and true toads (Bufo sp.).

Many resident birds can be found in the Tibesti. These include the crowned sandgrouse (Pterocles coronatus), bar-tailed lark (Ammomanes cincturus), blackstart (Oenanthe melanura syn. Cercomela melanura), desert lark (Ammomanes deserti), desert sparrow (Passer simplex), fulvous babbler (Argya fulva), greater hoopoe-lark (Alaemon alaudipes), Lichtenstein's sandgrouse (Pterocles lichtensteinii), pale crag martin (Ptyonoprogne obsoleta), trumpeter finch (Bucanetes githagineus) and the white-crowned wheatear (Oenanthe leucopyga).

The gueltas are flushed periodically each year by stormwater, maintaining low salinity and supporting several species of freshwater fish. These include the African sharptooth catfish (Clarias gariepinus), East African red-finned barb (Enteromius apleurogramma syn. Barbus apleurogramma), Tibesti labeo (Labeo tibestii, an endemic species) and the redbelly tilapia (Coptodon zillii).

Map of the Tibesti and surrounding area (in French)

The town of Bardaï, located on the northern flank of the mountains at an elevation of 1,020 m (3,350 ft), is the capital of the Tibesti region. It is connected to the town of Zouar, to the southwest, by a track that crosses Tarso Toussidé. The village of Omchi is accessible from Bardaï via Aderké, or from the town of Aouzou via Irbi. These rough tracks extend southward towards Yebbi Souma and Yebbi Bou, and then follow the course of Enneri Misky. The eastern half of the Tibesti is cut off from the western half, and the eastern village of Aozi is accessible from Libya via Ouri. Zouar has an airport, as does Bardaï at Zougra. Bardaï also has a hospital, although the medical supply is very much dependent upon the prevailing political situation.

Map of the Toubou population in Africa

The vast majority of the population is Teda, one of the two ethnicities of the Toubou people. However, some clans are Daza, the other Toubou ethnicity, who left their traditional homes in the lowlands to the south and moved north to the Tibesti. The Toubou live primarily in northern Chad, but also in southern Libya and eastern Niger. The Toubou language has two main dialects, Tedaga, spoken by the Teda, and Dazaga, spoken by the Daza. Despite their differences, the two Toubou groups generally identify as a single ethnic group. The Toubou elect a chief, the Derdé, from the Tomagra clan, although never from the same family consecutively. Historically, individual clans rarely had more than a thousand members and were quite dispersed throughout the Tibesti. In 2009,[update] the population of the Tibesti was officially estimated at 21,000 inhabitants. As of 2017,[update] that number has risen to 54,000 inhabitants. Yet the Toubou, in general, are semi-nomadic, moving between the mountains and other regions, and thus the Tibesti may have no more than 10,000 to 15,000 permanent residents.

Traditional Toubou life is punctuated by the seasons, divided between animal husbandry and agriculture. Twentieth-century anthropological studies show Toubou, particularly around palm groves, living in primitive round huts built with stone walls bound by mortar or clay, or built from clay or salt blocks. In the highlands, the buildings were built of stone, forming circles 1.5 m (5 ft) in diameter and one meter (3 ft) high, which served as shelters for goats, or as granaries, or as human shelters and defense structures. In other cases, the Toubou lived in tents that could be easily moved between the fields and the palm groves.

Human settlement

A Toubou woman in traditional attire

There is evidence of human occupation of the Tibesti dating back to the Stone Age, when denser paleovegetation facilitated human habitation. The Toubou were settled in the region by the 5th century BC and eventually established trade relations with the Carthaginian civilization. Around this time, Herodotus mentioned the Toubou, whom he labeled "Aethiopians", and described them as having a language akin to the "cry of bats".

Herodotus further remarked on a conflict between the Toubou and the civilization of Garamantes based in present-day Libya. Between AD 83 and 92, a Roman traveler, likely a trader, named Julius Maternus, explored the territory of the Tibesti Mountains with, or under the charge of, the king of Garamantes. The Tibesti are suspected by modern historians to have been part of an unidentified country named Agisymba, and Maternus's expedition may have been part of a broader military campaign by Garamantes against the populace of Agisymba.

In the 12th century, the geographer Muhammad al-Idrisi spoke of a "country of Zaghawa negroes", or camel herders, that had converted to Islam. The historian Ibn Khaldun described the Toubou in the 14th century. In the 15th and 16th centuries, Al-Maqrizi and Leo Africanus referred to the "country of the Berdoa", meaning Bardaï, the former associating the Toubou with the Berbers and the latter describing them as Numidian relatives of the Tuareg.

Distribution of the clans of the Tibesti Mountains

The Toubou settled in the Tibesti in several waves. Generally, newcomers either killed or absorbed the previous clans after battles that were often both long-lasting and bloody. The Teda clans, considered indigenous to the area, were first established around Enneri Bardagué. Namely, these clans were the Cerdegua, Zouia, Kossseda (nicknamed yobat or "hunters of well water"), and possibly the Ederguia, although the Ederguia's origin may be Zaghawa and only go back to the 17th century. These clans controlled the palm groves, and made a peace pact with the Tomagra, a nearby clan of camel herders who practiced Ghazw. It was upon the agreement to this pact at the end of the 16th century that power was consolidated under the Derdé, the principal regulator of the clans, whose appointment is always made from the Tomagra clan.

There is evidence of early Daza settlements in the Tibesti; however, these early clans—the Goga, Kida, Terbouna and Obokina—were assimilated into later Daza clans, who arrived in the Tibesti between the 15th and 18th centuries, possibly having fled the Kanem-Bornu Empire in the southwest. These later Daza arrivals include the Arna Souinga in the south, Gouboda in the center-west, Tchioda and Dirsina in the west, Torama in the northwest and center-east, and the Derdekichia (literally, "descendants of the chief," the products of a union between an Arna Souinga and an Emmeouia) in the north. The Tibesti then played the role of an impregnable mountain stronghold for the newcomers. Meanwhile, constant migration between the north and southwest of Chad, along with significant mixing of the populations, forged a significant degree of cohesion among the Toubou ethnicities. Periods of territorial expansion in the 10th and 13th centuries and periods of recession in the 15th and 16th centuries likely coincided with more or less pronounced wet and dry periods.

Several clans with traditions similar to those of the Donzas of the Borkou region, south of the Tibesti, settled in the range in the 16th and 17th centuries. These include the Keressa and Odobaya in the west, Foctoa in the northwest and northeast, and Emmeouia in the north. Several other clans—the Mogode in the west, Terintere in the north, Tozoba in the center, and Tegua and Mada in the south—are originally clans of the Bideyat people who immigrated from the Ennedi Plateau, southeast of Tibesti, around the same time. The Mada, however, have since largely emigrated to Borkou, Kaouar and Kanem.

The early 17th century also saw the arrival of three clans from the region of Kufra to the northeast. The Taïzera settled in the plateau in the center and west of the mass, probably fleeing the Arab push into present-day Libya. According to oral tradition, their leader was initially rejected by the Daza clans and lived in isolation until winning the favor of a Dirsina woman. The Mahadena occupy the northeast quarter of the range and are likely from the Jalo oasis of Cyrenaica and thus related to the Mogharba Arab tribes, although an alternative hypothesis is that they are of Bideyat origin. Following years of conflict, a branch of the Mahadena clan, the Fortena, withdrew to the western margin of the Tibesti. The Fortena Mado ("Red Fortena") settled there, while the Fortena Yasko ("Black Fortena") pushed further west to Kaouar.

The Tuareg people intermixed with the Toubou clans, especially with the early Goga clan, which produced the Gouboda, and with the later Arna clan, which produced the Mormorea. In both instances, the new clans were placed under the authority of suzerain clans of the traditionally feudal Tuareg, although they were eventually assimilated into the Toubou majority.

  • The settlement of the Tibesti
  • The indigenous Teda clans

  • The Daza clans migrate from Kanem

  • The Donza clans migrate from Borkou

  • The Bideyat clans migrate from Ennedi

  • Other clans migrate from Kufra, Cyrenaica and Jalu

Regional relations and colonization

In the mid-19th century the Ottoman Empire began a campaign of territorial conquest across northern Africa from its regional headquarters in Libya, yet was unable to subdue the Tibesti. In 1890, to the chagrin of the Turks, France and Great Britain signed a declaration recognizing a French zone of influence in northern Africa from the Mediterranean Sea down to Lake Chad. In response, the Toubou allied with the Senussi Arabs of Libya and agreed that the southern half of the Tibesti could serve as a fallback base for the Senussi in their struggle against the French Colonial Army. As the Sennussis' influence moved southward, so did their headquarters, which in 1899 was moved to the town of Gouro on the southeast flank of the range. The Senussi founded a Zawiya in Bardaï, which quickly promoted the total Islamization of the Tibesti. At the outbreak of the Italo-Turkish War, the Senussi allied with the Ottoman Empire and, at the request of the Derdé, the Turks established garrisons in Tibesti beginning in March 1911. These garrisons fell apart a few months later when the Toubou attacked the Turkish troops.

While the Italians occupied the Fezzan, a French column entered the Tibesti in early 1914 from Kaouar. The region was at the heart of a dispute between the colonial powers, with the Italian Empire to the north and French West Africa to the south. During World War I, a Senussi revolt forced the Italians to temporarily withdraw from the Fezzan and the northeastern part of the Tibesti. Likewise, fierce resistance from the Toubou forced the French troops to retreat southward from the Tibesti in 1916. After a period of internal disorder, the Tibesti was reconquered by the French colonial empire in 1929, and the region was placed under the administration of French Equatorial Africa. Libya gained its independence from Italy in 1947, and was released from British and French oversight in 1951.

Modern history

Chadian Civil War

See also: Claustre Affair

Chad gained independence from France in 1960, and in 1965 the Chadian government led by François Tombalbaye imposed its administrative and judicial authority in the Tibesti. Mere days after the withdrawal of French troops from the region, rebellion erupted in Bardaï, followed by numerous small battles over subsequent months and a more significant battle in Bardaï in September. In response, the Tombalbaye government imposed travel and trade restrictions on the Toubou and voided the traditional power of the then Derdé, Oueddei Kichidemi. Kichidemi went into exile in Libya the following year and became a national symbol in Chad for opposition to the government. These events sparked the First Chadian Civil War, which lasted from 1965 to 1979.

In 1968, the French Army, at the request of Tombalbaye, intervened in an attempt to put an end to the rebellion. However, French General Edouard Cortadellas admitted their attempts to quell the Toubou were essentially hopeless, remarking, "I believe we should draw a line below [the Tibesti region] and leave them to their stones. We can never subdue them." The French therefore focused their intervention on the center and east of the country, leaving the Tibesti region largely alone.

In 1969, Goukouni Oueddei, a Teda leader, and Hissène Habré, a Daza leader, emerged from the Tibesti to form the Second Liberation Army. In April 1974, the Second Liberation Army captured Bardaï from the Chadian government and took hostage the French archeologist Françoise Claustre, German doctor Christophe Staewen and Marc Combe, an assistant to Claustre's husband, and held them in the mountains. Staewen's wife and two soldiers of the Chadian army were killed. The West German government quickly paid the ransom and Staewen was released. The French government sent the military officer Pierre Galopin to negotiate with the rebels, but he was captured by the rebels and executed in April 1975. Marc Combe was able to escape in May 1975. The remaining hostages were released in January 1977 in Tripoli after France acceded to the rebel's ransom demand. The hostage incident, known as "L'affaire Claustre", caused a rift between the French and Chadian governments.

Another rift formed between Goukouni and Habré, which by 1976 had spread to the Second Liberation Army, leaving one side commanded by Habré and the other commanded by Goukouni and supported by Libya. In June 1977, Goukouni's forces attacked the Chadian government stronghold in Bardaï. The rebels also attacked Zouar. These battles resulted in the death of 300 government troops. Bardaï surrendered to the rebels on July 4, while Zouar was evacuated. The Chadian government, led by Félix Malloum since Tombalbaye's overthrow in 1975, signed a peace agreement with Habré in 1978, although fighting with other rebel groups, many aligned with Libya, continued.

Tibesti War

Map showing the Aouzou Strip between Chad and Libya

In 1978, war broke out between Chad and Libya ostensibly over the Aouzou Strip, a 114,000-square-kilometer (44,000 sq mi) borderland between Chad and Libya that extends into the Tibesti Mountains and is rumored to contain uranium deposits. In 1980, Libya used the strip as a base from which stage an attack, led by Goukouni, on the Chadian capital, N'Djamena, located in southern Chad and controlled by Habré. N'Djamena was toppled in December; however, under considerable international pressure, Libya withdrew from southern Chad in late 1981, and Habré's Armed Forces of the North (FAN) took control of the entirety of Chad with the exception of the Tibesti, where Goukouni retreated with his Libyan-backed Government of National Unity (GUNT) forces. Goukouni then established a National Peace Government in Bardaï and proclaimed it the legitimate government of Chad. Habré attacked the GUNT in the Tibesti in both December 1982 and January 1983 but was repelled on both occasions. Although fighting intensified over the next several months, the mountains remained under the control of the GUNT and Libyan forces.

By 1986, following a series of military defeats, the GUNT had begun to disintegrate along with relations between Goukouni and Libya. In December, Goukouni was arrested by the Libyans, which spurred his troops to attack Libyan positions in the Tibesti, forcing the Libyans to withdraw. Libya sought to retake Bardaï and Zouar, and sent a task-force of 2,000 troops with T-62 tanks and heavy support by the Libyan Air Force into the Tibesti. The offensive started successfully, expelling the GUNT from its key strongholds. The attack ultimately backfired, however, as it resulted in the prompt reaction of Habré, who sent 2,000 soldiers to support the GUNT forces. Although the Libyans were only partially repelled from the Tibesti, the broader campaign was a great strategic victory, as it transformed a civil war into a national war against a foreign invader, stimulating a sense of national unity never before seen in Chad. After a series of defeats in northeastern Chad, Libyan forces withdrew fully from the Tibesti in March 1987.

MDJT War

Following a decade of relative peace, in late 1997 the Tibesti saw the formation of the Movement for Democracy and Justice in Chad (MDJT), a rebel group opposed to Chadian president Idriss Déby. Numbering around 1,000 fighters at its peak between 2000 and 2001, and financed by Libyan Teda clans and the Libyan government, the MDJT was able to take control of several towns in the Tibesti. Battles with the Chadian National Army (ANT) were particularly violent between 1998 and 2002, resulting in the deaths of between 500 and 850 MDJT rebels and a comparable number of ANT soldiers at locales across northern Chad, including Bardaï. Although civilian casualties were relatively limited, many civilians were killed and injured by landmines, and the war resulted in the displacement of a large portion of the local population.

Between 1998 and 2010 the MDJT had established a weak government in the Tibesti region, functionally independent from that of Chad. In 2002, however, weakened by its isolation in the Tibesti and from a series of military defeats, the MDJT split into several factions following the death of its leader, Youssouf Togoïmi. In 2005, under pressure from Libya, the "most legitimate" MDJT faction signed a peace agreement with the Chadian government, yet the war continued, albeit at a lower intensity. From 2009 to 2010, the last of the MDJT rebels surrendered to the Chadian government. The legacy of decades of war continues to burden the Tibesti with a lack of government, a warrior culture, and a landscape strewn with thousands of landmines.

Gold rush

Gold was discovered in the Tibesti Mountains in 2012, attracting prospectors from across the Sahel. The arrival of migrants has led to violent conflicts with the Teda locals, a problem exacerbated by an influx of weaponry to the region due to the ongoing[update] wars in Darfur and Libya. Violence has also arisen as a result of disputes between the miners themselves; for example, around 100 people were killed in May 2022 over a "banal dispute" between miners. The increased migration has also increased drug traffic, with the Tibesti lying along the trans-Saharan smuggling route for South American cocaine destined for Europe. Nevertheless, the gold discovery has benefited the impoverished region economically. Many Tibesti residents have been able to purchase goods such as cars, televisions and satellite telephones that they could not otherwise afford. "If by the grace of God, gold had not appeared we would not even have anything to eat", remarked one Tibesti prospector.

Scientific exploration and research

Gustav Nachtigal, the first European explorer of the Tibesti

Due to its isolation and geopolitical situation, the Tibesti Mountains were long unexplored by scientists. The German Gustav Nachtigal was the first European to explore, albeit with great difficulty, the Tibesti in 1869. While Nachtigal provided an accurate description of the population, his expedition was fiercely opposed by the Toubou, and his account discouraged any new adventure into the Tibesti for over 40 years. Later expeditions carried out between 1920 and 1970 yielded valuable information on the geology and petrology of the range. The French anthropologist Charles le Cœur and his wife Marguerite, a geographer, lived among the Teda of Tibesti between 1933 and 1935. Le Cœur was the first to closely study the Tibesti populace, but the outbreak of World War II prevented him from publishing his research. French Colonel Jean Chapelle published a book on the Toubou and their lifestyle in 1957. In 1965, the Free University of Berlin opened a geomorphological research station in Bardaï; however, research was slowed due to the Chadian Civil War, and the station was ultimately closed in 1974.

Although the Tibesti is one of the world's most significant examples of intracontinental volcanism, ongoing political instability and the presence of landmines means that, today, geologic research often must be conducted on the basis of satellite images and comparison with research on Martian volcanoes. Little public geologic research had been conducted in the Tibesti Mountains until the work of Gourgaud and Vincent in 2004; however, an expedition in 2015 sought to assess the feasibility of establishing a new geoscience research station in Bardaï.

Climbing history

Although not an alpine climb, Gustav Nachtigal ascended to 2,400 m (7,873 ft) elevation as he traversed a pass abutting Pic Toussidé during his exploration of the Tibesti in 1869. The Englishman Wilfred Thesiger summited the highest mountain in the range, the 3,415-meter (11,204 ft) Emi Koussi, in 1938. In 1948, the Swiss Foundation for Alpine Research mounted an expedition under Edouard Wyss-Dunant, which scaled both the peak and needle of Botoum, at 2,400 m (7,900 ft) and 2,000 m (6,600 ft), respectively.

In 1957, Peter Steele led a University of Cambridge expedition that sought to conquer Tarso Tieroko, which Thesiger had described as "probably the most beautiful peak in Tibesti". After climbing two peaks situated on a ridge to the north, they attempted Tieroko, but just 60 m (200 ft) from the summit, they were faced with a vertical, crumbling rock wall and were forced to descend. Following this defeat, they took the opportunity to climb Emi Koussi, 19 years after its first ascent by Thesiger, and also Pic Woubou, a prominent spire located between Bardaï and Aouzou. Seven years later, in 1965, a team led by the Englishman Doug Scott succeeded in climbing Tieroko.

In 1963, an expedition under the Italian Guido Monzino ascended a peak in the massif of the Aiguilles of Sissé which, despite rising only 800 ft (240 m) above ground level, proved "very difficult". The Englishman Eamon "Ginge" Fullen scaled Bikku Bitti, the highest peak in Libya at 2,266 m (7,434 ft), in 2005, capping a successful Guinness World Records attempt. Due to the unstable political situation, mountaineering in the Tibesti remains a challenging endeavor today.

Natural resources

Although gold was long known to exist in small quantities, substantial deposits were discovered in 2012. Diamonds have also been found. The mountains and their surroundings could contain significant quantities of uranium, tin, tungsten, niobium, tantalum, beryllium, lead, zinc and copper. Amazonite is present and was reportedly mined by the ancient Libyan civilization of Garamantes. Salt is mined today, and is an important source of income for the Toubou.

The Soborom geothermal field, the name of which means "healing water", is known to locals for its medicinal qualities; its pools are rumored to cure dermatitis and rheumatism after several days of soaking. As of the latest analysis, in 1992,[update] Mare de Zoui and its surroundings were rarely visited, aside from a nearby oasis. However, there are numerous small oases on the plains of Borkou, near Emi Koussi, which are extensively exploited. This water is thought to be sourced from the Tibesti Mountains, from where it flows underground before surfacing at these springs.

Agriculture

There are accessible oases to the west and north of the range. Where mosquitoes do not abound, they support several villages, such as Zouar where, by the 1950s, indigenous plant species had been largely replaced by some 56,000 date palms (Phoenix dactylifera). The dates are harvested between late July and early August. In winter, when reserves are depleted, it is not uncommon for the cores of the dates and the fiber of the palms to be ground into a paste and consumed. Some native palm species remain, such as the doum palm (Hyphaene thebaica), from which the hard yet vaguely-sweet fruit rinds are collected, ground and consumed, despite their low nutritional value. The banks of the enneris grow desert gourd (Citrullus colocynthis), which are collected in October to extract the bitter seeds which, after being washed, are ground to make flour. Women are customarily responsible for gathering wild grains on the tarsos in August.

Horticulture is practiced on a small scale using traditional irrigation methods. The palm groves can also grow wheat, millet and maize, but the crops are spotty and sometimes swept away by flooding. In the 1950s,[update] in total, including barley, the Tibesti produced 300 metric tons (330 short tons) of cereals each year. On the plains of Borkou, some fields are irrigated, where cattle, goats and dromedaries can drink. In the 1950s, it was reported that goats and, more rarely, sheep numbered 50,000 heads, while 8,000 dromedaries and 7,000 donkeys were being raised in the range. Since the droughts of the 1970s and 1980s, dromedaries have come to dominate at the expense of cattle. Most animals spend the winter on the plateaus or in the high valleys. They descend into the lower valleys in February, just after the sowing of wheat, and then return in June to allow harvest. Fishing is possible in the water holes. Traditionally, agricultural product was traded once a year in exchange for fabrics.

Tourism

A valley in the Tibesti Mountains

As the Sahara's highest mountain range, with geothermal features, a distinctive culture, and numerous rock and parietal artworks, the Tibesti has tourism potential. However, tourist accommodations are limited at best. In the early 2010s, the French adventure travel company Point-Afrique financed the repair of the airport at Faya-Largeau, some 200 kilometers (120 mi) southeast of the Tibesti, and established direct charter flights between Faya and Marseille. Although the flights mainly brought tourists destined for the Ounianga Lakes UNESCO World Heritage Site, there was considerable hope that they would also open the gates for tourism in the Tibesti. For example, the Chadian government invested in a tourist camp along with walled pavilions in Bardaï. Yet, following the Libyan Crisis and France's intervention in Mali, the French government pressured tour operators to prevent French tourists from venturing into the Sahara, and the flights ended.

As of 2017,[update] there are essentially only two tour operators in Chad, run by Chadians and Italians and both based in N'Djamena, which offer all the tours that exist in Chad, including trips to the Tibesti. Tours are typically multi-week affairs, with tourists accommodated in tents. They include exposure to Toubou cultural traditions and to the Tibesti's rock and parietal art. Continuing civil unrest and the presence of landmines pose a danger to tourists, and, despite the occasional tour group, the Tibesti remains one of the most isolated places on Earth.

Conservation

The resources available for conservation in the Tibesti are limited. In 2006, various non-governmental working groups proposed a protected area to preserve the area's rhim gazelle and Barbary sheep populations. The protected area would be modeled after the Ouadi Rimé-Ouadi Achim Faunal Reserve to the south. However, due to economic and political barriers, the project has not moved beyond the proposal stage. Nevertheless, the establishment of two World Heritage Sites in northern Chad in 2012 and 2016 has renewed hope that a similar feat might be achieved in the Tibesti.

Rock and parietal art

The Tibesti Mountains are renowned for their rock and parietal art. Around 200 engraving sites and 100 painting sites have been identified. Many date as early as the 6th millennium BC, long before the arrival of the Toubou. The art has suffered the effects of time, including weathering from sand blown by the wind. The earliest works often portray animals that have since died out in the region due to climate change, including elephants, rhinoceros, hippopotamus and giraffes. More recent art includes ostriches, antelopes, gazelles, baboons and sheep. Later works, dated less than 2000 years old, portray domesticated animals, such as oxen and camels.

Other engravings portray warriors dressed in feathers or spiked ornaments and armed with bows, shields, assegai, or traditional knives. Still others portray celebrations and scenes from everyday life. The walls of a canyon near Bardaï have engravings that measure over 2 meters (7 ft) in height, including that of the "man of Gonoa", Gonoa being the name of the enneri that runs through the valley. These primarily show hunting scenes. The Tibesti art is unique in the Sahara because of the absence of inscriptions, the relative lack of chariots, and the low representation of camels and horses until comparatively recently.

Other works

The Tibesti Mountains have inspired several contemporary works of art and literature. The volcanic spires of the Tibesti, along with a stylized sheep's head, were displayed on a 20 CFA franc postage stamp issued by Republic of Chad in 1962. In 1989, French painter and sculptor Jean Vérame used the natural surroundings of the Tibesti to create multidimensional land art works by painting rocks.

The Tibesti range was featured in the 1958 short story "Le Mura di Anagoor" ("The Walls of Anagoor") by the Italian novelist Dino Buzzati. In the story, a local guide offers to show a traveler the walls of a great city that is absent from the maps. The city is exceedingly opulent, yet exists in total autarky and does not submit to local authority. The traveler waits many years, in vain, to enter the Tibesti city.

Notes

  1. An alternative theory holds that the name Toubou means "bird," because members of the Toubou communicate by whistling or because they run fast.
  2. Temperatures in the Tibesti can drop to −10 °C (14 °F).
  3. Pic Toussidé is the highest point on the high plateau Tarso Toussidé.
  4. It is unlikely that the earlier vegetation was significantly qualitatively different from that which exists today, although Mediterranean flora would have been somewhat more common.
  5. Although usually ascribed to A. impalearis, the Tibesti agama may in fact be the Afrotropical species A. agama.
  6. Herodotus described "Aethiopian troglodytes", located "ten days" from Awjila near a "mound of salt, water and palm trees", being pursued by four-horsed chariots of the civilization of Garamantes. Chapelle (1982, p. 36) reasons that these were the Toubou, as troglodytes are by definition cave dwellers, the only caves near the described location are those of the Tassili n'Ajjer and the Tibesti, and the ergs neighboring the Tassili n'Ajjer are unsuitable for chariots, while the flat regs surrounding the Tibesti would have allowed chariots to pursue those who came to plunder the palm groves.
  7. According to Oliver (1975, p. 290), this populace was "in all probability" the Toubou.
  8. Le Cœur was killed in action in Italy in 1944.
  9. The two peaks are "The Imposter" and "Hadrian's Peak."
  10. At least one other source reports that the name instead means "boiling water".
  11. Lakes of Ounianga and the Ennedi Plateau
  12. Although the plot of "Le Mura di Anagoor" takes place in the Tibesti, at least one English translation has moved it to Tibet.

References

  1. "Emi Koussi". Global Volcanism Program. Smithsonian Institution. RetrievedSeptember 7, 2020.
  2. Room 2006, p. 375.
  3. Shoup 2011, p. 284.
  4. Permenter and Oppenheimer 2007, p. 611.
  5. Salam, Hammuda and Eliagoubi 1991, p. 1155.
  6. Sola and Worsley 2000, p. xi.
  7. Permenter and Oppenheimer 2007, pp. 615, 619.
  8. Beauvilain 1996, p. 20.
  9. Hughes, Hughes and Bernacsek 1992, p. 3.
  10. Braquehais 2006.
  11. Google. "Google Earth" (Map). Google Earth. RetrievedApril 19, 2021.
  12. Roure 1939, p. 1.
  13. Grove 1960, p. 18.
  14. Bosworth 2012.
  15. Gourgaud and Vincent 2004, p. 261.
  16. Permenter and Oppenheimer 2007, p. 609.
  17. Permenter and Oppenheimer 2007, p. 610.
  18. Hughes, Hughes and Bernacsek 1992, p. 1.
  19. Baldur 2018, p. 9.
  20. Permenter and Oppenheimer 2007, pp. 615–616.
  21. Hellmich 1972, p. 10.
  22. Braun and Passon 2020, p. 1.
  23. Beauvilain 1996, pp. 15–20.
  24. Permenter and Oppenheimer 2007, pp. 609, 615–616, 620–621.
  25. Permenter and Oppenheimer 2007, p. 615.
  26. Permenter and Oppenheimer 2007, p. 619.
  27. Permenter and Oppenheimer 2007, pp. 611, 614.
  28. Permenter and Oppenheimer 2007, pp. 609, 611, 615.
  29. Hughes, Hughes and Bernacsek 1992, pp. 1–2, 18–20.
  30. Grove 1960, p. 23.
  31. Chapelle 1982, pp. 68–70, 184.
  32. Chapelle 1982, p. 67.
  33. Hughes, Hughes and Bernacsek 1992, pp. 1–2.
  34. Hughes, Hughes and Bernacsek 1992, p. 18.
  35. Hughes, Hughes and Bernacsek 1992, pp. 2–3.
  36. Grove 1960, pp. 23, 25.
  37. Hughes, Hughes and Bernacsek 1992, pp. 1–3.
  38. Hughes, Hughes and Bernacsek 1992, pp. 1–2, 18.
  39. Hughes, Hughes and Bernacsek 1992, p. 2.
  40. Hughes, Hughes and Bernacsek 1992, pp. 18–19.
  41. Hughes, Hughes and Bernacsek 1992, pp. 3, 18.
  42. "Emi Koussi: Synonyms and Subfeatures". Global Volcanism Program. Smithsonian Institution. RetrievedSeptember 7, 2020.
  43. "Tarso Tôh". Global Volcanism Program. Smithsonian Institution. RetrievedMarch 20, 2021.
  44. Permenter and Oppenheimer 2007, pp. 611, 616, 619.
  45. Pegram et al. 1976, p. 127.
  46. El Makkrouf 1988, p. 964.
  47. Suayah 2006, p. 568.
  48. Permenter and Oppenheimer 2007, pp. 611–612.
  49. Permenter and Oppenheimer 2007, pp. 611, 616.
  50. Permenter and Oppenheimer 2007, pp. 609, 616, 619.
  51. Permenter and Oppenheimer 2007, pp. 619–620.
  52. Permenter and Oppenheimer 2007, p. 621.
  53. Permenter and Oppenheimer 2007, pp. 611, 619.
  54. El Makkrouf 1988, p. 951.
  55. "Tarso Toussidé". Global Volcanism Program. Smithsonian Institution. RetrievedFebruary 12, 2021.
  56. Permenter and Oppenheimer 2007, pp. 615, 617–619.
  57. Permenter and Oppenheimer 2007, pp. 617–619.
  58. Hagedorn 1997, pp. 267–268.
  59. Hagedorn 1997, p. 267.
  60. Hagedorn 1997, p. 273.
  61. Hagedorn 1997, pp. 268–270, 273.
  62. Soulié-Märsche et al. 2010, pp. 334–335.
  63. Maley 2000, p. 121.
  64. Tourte 2005, p. 11.
  65. Musch 2021, p. 2.
  66. "Tibesti-Jebel Uweinat montane xeric woodlands". Terrestrial Ecoregions. World Wildlife Fund.
  67. Messerli 1973, p. A143.
  68. Messerli 1973, p. A140.
  69. "Climate Data for Latitude 21.25 Longitude 17.75". Global Species. July 28, 2011. Archived from the original on March 23, 2017.
  70. Musch 2021, p. 3.
  71. "Climatic Research Unit (CRU) time-series datasets of variations in climate with variations in other phenomena". University of East Anglia Climatic Research Unit. February 14, 2017. Archived from the original on March 23, 2017.
  72. Mies and Lösch 1995, p. 192.
  73. White 1998, p. 243.
  74. Giazzi 1996, p. 179.
  75. White 1998, pp. 243–244.
  76. Hughes, Hughes and Bernacsek 1992, pp. 18–20.
  77. Schultze-Motel 1969, pp. 218–219.
  78. Hughes, Hughes and Bernacsek 1992, p. 19.
  79. Mies and Lösch 1995, p. 196.
  80. Kappen 1973, p. 311.
  81. Beudels 2008.
  82. Baseline Study 2009, p. 13.
  83. Camps-fabrer 1999.
  84. Ginsberg and Macdonald 1990, pp. 17–18.
  85. Roos et al. 2021, pp. 410, 415.
  86. Benda et al. 2014, pp. 10, 34, 126.
  87. Geniez 2011, p. 27.
  88. Animals Committee 2006, p. 69.
  89. Salvador 1996, p. 1.
  90. "Tibesti Massif". BirdLife International. RetrievedFebruary 15, 2021.
  91. Azevedo and Decalo 2018, p. 495.
  92. Ministère des Affaires étrangères 2016.
  93. Tilho 1920.
  94. Thompson 2020.
  95. Mahjoub 2015, p. 19.
  96. Chapelle 1982, p. 6.
  97. Tubiana and Gramizzi 2017, p. 106.
  98. Chapelle 1982, p. 7.
  99. Tubiana and Gramizzi 2017, p. 30.
  100. Tubiana and Gramizzi 2017, p. 29.
  101. Tubiana and Gramizzi 2017, pp. 66–67.
  102. Chapelle 1982, pp. 72–79.
  103. Baroin 1985, p. 75.
  104. Chapelle 1982, pp. 2, 38, 407.
  105. Tubiana and Gramizzi 2017, p. 32.
  106. Tubiana and Gramizzi 2017, pp. 32, 106.
  107. Chapelle 1982, chpts. 4, 5.
  108. Chapelle 1982, pp. 30–31.
  109. Chapelle 1982, p. 70.
  110. Chapelle 1982, pp. 33–36.
  111. Beck and Huard 1969, p. 228.
  112. Chapelle 1982, pp. 35–36.
  113. Roure 1939, p. 2.
  114. Oliver 1975, p. 286.
  115. Huß 2006.
  116. Desanges 1964, p. 713.
  117. Oliver 1975, p. 290.
  118. Chapelle 1982, pp. 8, 54.
  119. Chapelle 1982, p. 9.
  120. Chapelle 1982, chpt. 2 sect. 1.
  121. Collelo 1990.
  122. Chapelle 1982, p. 41.
  123. Chapelle 1982, pp. 41–44, 72–79.
  124. Chapelle 1982, pp. 79–81.
  125. Ricciardi 1992, pp. 338–339.
  126. Ricciardi 1992, p. 334.
  127. Chapelle 1982, pp. 61–64, 93–97.
  128. Chapelle 1982, pp. 64, 96, 107.
  129. Ricciardi 1992, p. 342.
  130. Ricciardi 1992, p. 341.
  131. Chapelle 1982, p. 64.
  132. Ricciardi 1992, pp. 346–347, 357.
  133. Ricciardi 1992, p. 358.
  134. Chapelle 1982, pp. 2, 64.
  135. Ricciardi 1992, pp. 364–365, 371.
  136. Fearon, Laitin and Kasara 2006, pp. 3–4.
  137. Fearon, Laitin and Kasara 2006, p. 4.
  138. Fearon, Laitin and Kasara 2006, pp. 4, 12.
  139. Nolutshungu 1995, pp. 62–63.
  140. Fearon, Laitin and Kasara 2006, p. 6.
  141. Fearon, Laitin and Kasara 2006, p. 10.
  142. Arsenault 2006.
  143. Correau 2008.
  144. "Zum Weinen" 1975.
  145. Henderson 1984, chpt. II.
  146. Fearon, Laitin and Kasara 2006, p. 11.
  147. Higgins 1993, p. 18.
  148. Arnold 2009, p. 286.
  149. Fearon, Laitin and Kasara 2006, pp. 10–11.
  150. Jacobs 2011.
  151. Metz 1989, p. 55.
  152. Ricciardi 1992, p. 305.
  153. Metz 1989, pp. 55–56.
  154. Nolutshungu 1995, p. 186–188.
  155. Henderson 1984, Chpt. III.
  156. Nolutshungu 1995, p. 188.
  157. Nolutshungu 1995, pp. 213–214.
  158. Fearon, Laitin and Kasara 2006, p. 13.
  159. Pollack 2004, loc. 5452.
  160. Nolutshungu 1995, p. xii.
  161. Pollack 2004, locs. 5452–5457.
  162. Pollack 2004, loc. 5457.
  163. Nolutshungu 1995, pp. 230, 245.
  164. Pollack 2004, locs. 5457–5462.
  165. Tubiana and Gramizzi 2017, pp. 34–36.
  166. Tubiana and Gramizzi 2017, pp. 36–37.
  167. Tubiana and Gramizzi 2017, pp. 37–38.
  168. Tubiana and Gramizzi 2017, p. 38.
  169. Tubiana and Gramizzi 2017, p. 43.
  170. Tubiana and Gramizzi 2017, p. 47.
  171. Tubiana and Gramizzi 2017, pp. 37, 48, 52.
  172. Tubiana and Gramizzi 2017, pp. 9, 152–154.
  173. Tubiana and Gramizzi 2017, pp. 10, 78–79.
  174. Tubiana and Gramizzi 2017, pp. 10–11, 13, 132–133.
  175. "Around 100 dead in clashes between gold miners in Chad". Africanews. May 30, 2022. Archived from the original on May 30, 2022. RetrievedJune 17, 2022.
  176. Tubiana and Gramizzi 2017, pp. 131–132.
  177. Tubiana 2016.
  178. Tubiana and Gramizzi 2017, p. 102.
  179. Chapelle 1982, p. 10.
  180. Baroin 2003, p. 11.
  181. Fisher and Fisher 1987, pp. 236–237.
  182. Conklin 2013, search "Le Cœur Italy".
  183. Jäkel 1977, p. 61.
  184. Klitzsch 2004, pp. 245, 247.
  185. Permenter and Oppenheimer 2007, pp. 609–610.
  186. University of Cologne 2015.
  187. L. 1876, p. 169.
  188. Thesiger 1939, pp. 434, 438–439.
  189. "Expeditions supported by the SFAR: Swiss Expedition in Tibesti – Central Sahara". Swiss Foundation for Alpine Research. RetrievedApril 20, 2021.
  190. Steele 1964, p. 268.
  191. Steele 1964, pp. 268–270.
  192. Scott 2017, search "Tibesti" and "'climb Tieroko'".
  193. Cox 1965, p. 126.
  194. "Fastest time to climb the highest peaks in all African countries". Guinness World Records. Archived from the original on October 17, 2020. RetrievedFebruary 23, 2021.
  195. Ingram 2001, p. 39.
  196. Tubiana and Gramizzi 2017, p. 78.
  197. Maoundonodji 2009, p. 258.
  198. Chapelle 1982, p. 32.
  199. Suayah 2006, p. 564.
  200. Braun and Passon 2020, p. 144.
  201. Kaiser 1972, p. 17.
  202. Chapelle 1982, p. 69.
  203. Hughes, Hughes and Bernacsek 1992, pp. 19–20.
  204. Chapelle 1982, pp. 69–70.
  205. Hughes, Hughes and Bernacsek 1992, p. 20.
  206. Beauvilain 1996, pp. 21–24.
  207. Kröpelin 2017.
  208. "Nine extraordinary tours" 2019.
  209. Tubiana and Gramizzi 2017, p. 71.
  210. Grolle 2013.
  211. Leadbeater 2019.
  212. "Safety and security – Chad travel advice – GOV.UK". Foreign, Commonwealth and Development Office. Archived from the original on July 25, 2019. RetrievedFebruary 23, 2021.
  213. Sahelo-Saharan Antelopes Project 2006, p. 11.
  214. "Lakes of Ounianga". UNESCO. RetrievedFebruary 14, 2012.
  215. "Ennedi Massif: Natural and Cultural Landscape". UNESCO. RetrievedFebruary 14, 2021.
  216. Davis 1984, p. 8.
  217. Chapelle 1982, pp. 27–28.
  218. "Timbre: Head of sheep and Tibesti". Colnect.com. RetrievedFebruary 14, 2021.
  219. Berque 1993, p. 35.
  220. "Jean Vérame". Encyclopedie Audiovisuelle De L'art Contemporain (in French). Archived from the original on November 28, 2020. RetrievedMarch 21, 2021.
  221. Ferrari, Tinazzi and D’Erchia 2020, pp. 13–14.
  222. Buzzati 1984, pp. XI, 27.
  223. Buzzati 1958, chpt. 39.

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Tibesti Mountains Article Talk Language Watch Edit For the current region of Chad see Tibesti Region The Tibesti Mountains are a mountain range in the central Sahara primarily located in the extreme north of Chad with a small portion located in southern Libya The highest peak in the range Emi Koussi lies to the south at a height of 3 415 meters 11 204 ft and is the highest point in both Chad and the Sahara Bikku Bitti the highest peak in Libya is located in the north of the range The central third of the Tibesti is of volcanic origin and consists of five volcanoes topped by large depressions Emi Koussi Tarso Toon Tarso Voon Tarso Yega and Tousside Major lava flows have formed vast plateaus that overlie Paleozoic sandstone The volcanic activity was the result of a continental hotspot that arose during the Oligocene and continued in some places until the Holocene creating fumaroles hot springs mud pools and deposits of natron and sulfur Erosion has shaped volcanic spires and carved an extensive network of canyons through which run rivers subject to highly irregular flows that are rapidly lost to the desert sands TibestiThe Tibesti east of BardaiHighest pointPeakEmi KoussiElevation3 415 m 11 204 ft 1 Coordinates19 48 N 18 32 E 19 8 N 18 53 E 19 8 18 53 1 DimensionsLength480 km 300 mi Width350 km 220 mi Area100 000 km2 39 000 sq mi GeographyLocation in Northwestern ChadCountriesChad and LibyaRange coordinates20 46 59 N 18 03 00 E 20 783 N 18 05 E 20 783 18 05 Coordinates 20 46 59 N 18 03 00 E 20 783 N 18 05 E 20 783 18 05GeologyAge of rockOligoceneType of rockAndesite Basalt Basanite Dacite Ignimbrite Rhyolite Trachyandesite and Trachyte Tibesti which means place where the mountain people live is the domain of the Toubou people The Toubou live mainly along the wadis on rare oases where palm trees and limited grains grow They harness the water that collects in gueltas the supply of which is highly variable from year to year and decade to decade The plateaus are used to graze livestock in the winter and harvest grain in the summer Temperatures are high although the altitude ensures that the range is cooler than the surrounding desert The Toubou who were settled in the range by the 5th century BC adapted to these conditions and turned the range into a large natural fortress They arrived in several waves taking refuge in times of conflict and dispersing in times of prosperity although not without intense internal hostility at times The Toubou came into contact with the Carthaginians Berbers Tuaregs Ottomans and the Arabs as well as the French colonists who first entered the range in 1914 and took control of the area in 1929 The independent spirit of the Toubou and the geopolitics of the region has complicated the exploration of the range as well as the ascent of its peaks Tensions continued after Chad and Libya gained independence in the mid 20th century with hostage taking and armed struggles occurring amid disputes over the allocation of natural resources The geopolitical situation and the lack of infrastructure has hampered the development of tourism The Saharomontane flora and fauna which include the rhim gazelle and Barbary sheep have adapted to the mountains yet the climate has not always been as harsh Greater biodiversity existed in the past as evidenced by scenes portrayed in rock and parietal art found throughout the range which date back several millennia even before the arrival of the Toubou The isolation of the Tibesti has sparked the cultural imagination in both art and literature Contents 1 Toponymy 2 Geography 2 1 Location 2 2 Topography 2 3 Hydrology 2 4 Geology 2 5 Geomorphology 2 6 Climate 3 Flora and fauna 3 1 Flora 3 2 Fauna 4 Population 5 History 5 1 Human settlement 5 2 Regional relations and colonization 5 3 Modern history 5 3 1 Chadian Civil War 5 3 2 Tibesti War 5 3 3 MDJT War 5 3 4 Gold rush 5 4 Scientific exploration and research 5 5 Climbing history 6 Economy 6 1 Natural resources 6 2 Agriculture 6 3 Tourism 6 4 Conservation 7 Art and literature 7 1 Rock and parietal art 7 2 Other works 8 Notes and references 8 1 Notes 8 2 References 8 3 Bibliography 9 External linksToponymy EditThe Tibesti Mountains are named for the Toubou people also written Tibu or Tubu that inhabit the area In the Kanuri language tu means rocks or mountain and bu means a person or dweller and thus Toubou roughly translates to people of the mountains a and Tibesti to the place where the mountain people live 2 3 Most of the mountain names are derived from Arabic as well as the Tedaga and Dazaga languages The term ehi precedes the names of peaks and rocky hills emi precedes those of larger mountains and tarso precedes high plateaus and gently sloping mountainsides 4 5 6 For example the Ehi Mousgou is a 2 849 meter 9 347 ft stratovolcano near Tarso Voon 7 The name Tousside means that which killed the Tou as in the Toubou reflecting the danger of the still active volcano 8 The name of Bardai the principal town in the range means cold in Chadian Arabic b In the Tedaga language the town is known as Goumodi which means red pass signifying the color of the mountains at dusk 10 Geography EditLocation Edit False color exaggerated relief satellite image of the Tibesti Mountains viewed from the south The mountains lie on the border between Chad and Libya straddling the Chadian region of Tibesti and the Libyan districts of Murzuq and Kufra around 1 000 kilometers 620 mi north of N djamena and 1 500 kilometers 930 mi south southeast of Tripoli 11 The range is adjacent to Niger and located approximately halfway between the Gulf of Sidra and Lake Chad just south of the Tropic of Cancer 11 12 13 The East African Rift is 1 900 km 1 200 mi to the east and the Cameroon line lies 1 800 km 1 100 mi to the southwest 4 The range is 480 km 300 mi in length 350 km 220 mi in width 14 and spans 100 000 km2 39 000 sq mi 15 16 It draws a large triangle with sides of 400 km 250 mi 12 and vertices facing south northwest and northeast in the heart of the Sahara 17 18 making it the largest mountain range of the desert 19 Topography Edit The highest peak in the Tibesti Mountains as well as the highest point in Chad and the Sahara Desert is the 3 415 meter 11 204 ft Emi Koussi located at the southern end of the range 18 Other prominent peaks include Pic Tousside c at 3 296 m 10 814 ft and the 3 012 meter 9 882 ft Timi on its western side the 2 972 meter 9 751 ft Tarso Yega the 2 925 meter 9 596 ft Tarso Tieroko the 2 849 meter 9 347 ft Ehi Mousgou the 2 845 meter 9 334 ft Tarso Voon the 2 820 meter 9 250 ft Ehi Sunni and the 2 774 meter 9 101 ft Ehi Yey near the center of the range 20 The 3 376 meter 11 076 ft Mouskorbe is a peak notable for its height in the northeastern part of the mountain range 11 21 The 2 266 meter 7 434 ft Bikku Bitti the highest point in Libya is nearby on the other side of the border 11 22 The average elevation of the Tibesti Mountains is about 2 000 m 6 600 ft sixty percent of its area exceeds 1 500 m 4 900 ft in elevation 18 Satellite image of Emi Koussi The range includes five shield volcanoes with broad bases whose diameter can reach 80 km 50 mi Emi Koussi Tarso Toon which rises 2 575 m 8 448 ft above sea level Tarso Voon Tarso Yega and Tarso Tousside which culminates in the peak of the same name Several of these peaks are topped with large calderas 23 24 Tarso Yega has the largest caldera with a diameter of 19 to 20 km 12 to 12 mi and a depth of approximately 300 m 980 ft while Tarso Voon has the deepest caldera with a depth of approximately 1 000 m 3 300 ft and a diameter of 12 to 13 km 7 5 to 8 1 mi 25 They are complemented by four large lava dome complexes 1 300 to 2 000 m 4 300 to 6 600 ft high and several km wide all located in the central part of the mountain range Tarso Tieroko Ehi Yey Ehi Mousgou and Tarso Abeki which rises to 2 691 m 8 829 ft above sea level 20 These volcanic complexes are now considered inactive but according to the Smithsonian Institution were active during the Holocene 26 Tarso Tousside is an active volcano that has spewed lava over the past two millennia 23 Gases escaping from fumaroles on Tousside are visible when evaporation is low 23 26 The volcano s crater Trou au Natron is 8 km 5 0 mi in diameter and 768 m 2 520 ft deep 7 On the northwest side of Tarso Voon is the Soborom geothermal field which contains mud pools and fumaroles that vent sulfuric acid The sulfur has stained the surrounding soil bright colors Fumaroles are also present at the Yi Yerra hot springs on Emi Koussi 23 Tarso Toh was an active volcano in the early Holocene 26 The volcanic area of the Tibesti Mountains is located entirely in Chad it covers about a third of the total area of the Tibesti Mountains and is responsible for between 5 000 and 6 000 km3 1 200 and 1 400 cu mi of rock 23 27 The other four shield volcanoes of the Tibesti Mountains Satellite image of Tarso Toon top right and Ehi Yey bottom left Satellite image of Tarso Voon False color satellite image of Tarso Yega top Satellite image of Tarso Tousside showing Pic Tousside the center of the dark spot and Trou au Natron crater top left The rest of the Tibesti Mountains consists of volcanic plateaus tarsos located between 1 000 and 2 800 m 3 300 and 9 200 ft elevation as well as lava fields and ejecta deposits 28 The plateaus are larger and more numerous in the east the 7 700 km2 3 000 sq mi Tarso Emi Chi the 6 500 km2 2 500 sq mi Tarso Aozi the 3 000 km2 1 200 sq mi Tarso Ahon to the north of Emi Koussi and the 1 200 km2 460 sq mi Tarso Mohi In the center is Tarso Ourari at about 700 km2 270 sq mi To the west in the vicinity of Tarso Tousside is the aforementioned Tarso Toh a small plateau at just 490 km2 190 sq mi and the even smaller Tarso Tamertiou at 98 km2 38 sq mi 20 The plateaus are strewn with volcanic spires and are separated by canyons that have been formed by the irregular flow of wadis 23 29 30 After often violent rains they see the formation of ephemeral streams and flora 31 The southern southwestern and eastern slopes of the mountain range have a gentle rise while the northern slope of the range is a cliff overlooking the vast Libyan desert pavement known as the Serir Tibesti 32 Hydrology Edit Satellite image of Tibesti wadis enneris Five rivers in the northern half of the Tibesti Mountains flow to Libya while the southern half belongs to the endorheic basin of Lake Chad However none of the rivers travel long distances as the water evaporates in the desert heat or seeps into the ground although the latter may flow great distances through subterranean aquifers 33 The wadis in the Tibesti are called enneris 34 The water mainly originates from the storms that periodically rage over the mountains 35 36 Their flow is highly variable 37 For example the largest wadi named Bardague or Enneri Zoumeri on its upstream portion and located in the northern part of the range recorded a flow of 425 m3 s 15 000 cu ft s in 1954 yet over the next nine years it experienced four years of total drought four years of flow less than 5 m3 s 180 cu ft s and one year where three different flow rates were measured 4 9 and 32 m3 s 140 320 and 1 130 cu ft s 38 A guelta on the Ennedi Plateau 500 km 300 mi southeast of the Tibesti Two other major rivers cut into the mountains the Enneri Yebige flows northward until its riverbed disappears on the Serir Tibesti while Enneri Touaoul joins the south flowing Enneri Ke to form Enneri Miski which then disappears in the plains of Borkou Their basins are separated by an 1 800 meter 5 900 ft high watershed that runs from Tarso Tieroko in the west to Tarso Mohi in the east 12 39 The Enneri Tijitinga is the longest wadi in the range flowing some 400 km 250 mi southward It forms in the west of the range and peters out in the Bodele Depression as does Enneri Miski a little further to the east along with other wadis such as the Enneri Korom and Enneri Aouei 34 Several rivers flow radially on the southern slopes of the Emi Koussi before seeping into the sands of Borkou and then reemerging at escarpments up to 400 km 250 mi south of the summit near the Ennedi Plateau 40 At the bottom of many canyons are gueltas wetlands that accumulate water mainly during storms 36 41 Above 2 000 m 6 600 ft enneri beds sometimes contain sequential pools of water that remain largely unexplored update The water is replenished several times a year during flooding and salinity levels are low 34 The Mare de Zoui is a small permanent body of water 600 m 2 000 ft above sea level located in the northern part of the mountains in the wadi of the Enneri Bardague 10 km 6 2 mi east of Bardai Supplied by sources upstream of the wadi in heavy rains it overflows and spills into small wetlands 40 The Yi Yerra hot springs is located on the southern flank of Emi Koussi at about 850 m 2 800 ft elevation 1 42 Water emerges from the springs at 37 C 99 F 18 A dozen hot springs are also located at the Soborom geothermal field on the northwest side of Tarso Voon where water emerges at temperatures ranging between 22 and 88 C 72 and 190 F 18 23 Geology Edit Satellite image of the volcanic field on Tarso Toh which includes 150 cinder cones two maars and several basalt lava channels 43 The Tibesti Mountains are a large area of tectonic uplift that according to contemporary theory resulted from a mantle plume in the craton of the African lithosphere which is about 130 to 140 km 81 to 87 mi thick 44 45 This tectonic uplift may have been accompanied by the opening and subsequent closure via subduction of a rift zone 46 47 A system of regional faults although partially obscured by the volcanic product has two distinct orientations a NNE SSW alignment that could be an extension of Cameroon line and a NW SE alignment that could extend to the Great Rift Valley however the relationship between these fault systems has not been conclusively demonstrated 48 The basement of the Tibesti is composed of granite diorite and schist one of six exposures of Precambrian crystalline rock in North Africa 49 These are overlaid by sandstone of the Paleozoic era while the peaks consist of volcanic rock 4 18 The continental hotspot activity began as early as the Oligocene although most of the volcanic rock dates from the Lower Miocene to the Pleistocene and in places to the Holocene 18 50 Due to the comparatively slow movement of the African plate roughly between 0 and 20 mm 0 and 0 8 in per year since the Lower Miocene there is no relationship between the age of the volcanoes and their dimensions geographic distribution or alignment in contrast to hotspots such as the Hawaiian Emperor and Cook Austral seamount chains 51 This phenomenon is also seen in Martian volcanoes particularly Elysium Mons 52 Early volcanic activity created trap basalt formations that extend tens of kilometers and stack up to 300 m 1 000 ft thick 23 26 Basanite and andesite are also found in the volcanic layer 1 4 More recently in geologic time volcanic activity has deposited dacite rhyolite and ignimbrite as well as trachyte and trachyandesite 53 54 55 This trend towards the production of more felsic viscous lavas could be a sign of a waning mantle plume 26 Geomorphology Edit Animation showing the phases of volcanic activity in the Tibesti Mountains Volcanic activity in the Tibesti took place in several phases In the first phase uplift and extension of the Precambrian basement occurred in the central area The first structure to be formed was probably Tarso Abeki followed by Tarso Tamertiou Tarso Tieroko Tarso Yega Tarso Toon and Ehi Yey The product of this early volcanic activity has been completely obscured by later eruptions In the second phase the volcanic activity moved north and east forming Tarso Ourari and the ignimbrite bases of the vast tarsos as well as Emi Koussi to the southeast Thereafter during the third phase the outpouring of lava and ejecta deposits increased from Tarso Yega Tarso Toon Tarso Tieroko and Ehi Yey the collapse of these structures formed the first calderas This phase also saw the formation of the Bounai lava dome and Tarso Voon To the east the lava flows formed the large plateaus of Tarso Emi Chi Tarso Ahon and Tarso Mohi Emi Koussi increased in height The fourth phase saw the formation of Tarso Tousside and the lava flows of Tarso Toh in the west the collapse of the caldera on the summit of Tarso Voon and associated ejecta deposits in the center and the decline in lava production in the east with the exception of Emi Koussi which continued to rise In the fifth phase volcanic activity became much more localized and lava production continued to wane Calderas formed on top of Tarso Tousside and Emi Koussi and the lava domes Ehi Sosso and Ehi Mousgou appeared Finally in the sixth phase Pic Tousside formed on the western rim of several pre Trou au Natron calderas along with new lava flows including Timi on the northern slope of Tarso Tousside With scarce time for erosion these lava flows have a dark youthful appearance 56 Satellite image of the more recent lava rock in black with Tousside volcano center and the Trou au Natron crater bottom right The Trou au Natron and Doon Kidimi craters have formed even more recently with the former dissecting the earlier Tousside calderas Lava flows minor pyroclastic deposits and the appearance of small cinder cones and the formation of the Era Kohor crater are the most recent volcanic activities on Emi Koussi 57 Presently update there are reports of volcanic activity in various parts of the massif including hot springs at the Soborom geothermal field and fumaroles on Tarso Voon Yi Yerra near Emi Koussi and Pic Tousside 18 23 26 Carbonate deposits in the Trou au Natron and Era Kohor craters are also representative of more recent volcanic activity 26 The study of fluvial terraces has revealed coarse sand and gravel alternating with terraces of silt clay and fine sand 58 This alternation highlights repeated changes in the dominant fluvial or wind patterns in the valleys of Tibesti during the Quaternary Period 59 The phases of erosion and sendimentation are indicative of the climate alternating between dry and wet conditions the latter of which fostered vegetation in the Tibesti that was likely significantly denser than that which exists today d 61 Furthermore the discovery of calcified charophyta particularly of the family Characeae and gastropod fossils in Trou au Natron indicates the presence of a lake at least 300 m 1 000 ft deep during the Late Pleistocene 62 These phenomena are associated with various changes in climate most notably during the last glacial maximum which increased precipitation and reduced evaporation due to lower temperatures 63 In fact the Tibesti supplied a considerable amount of water to the Paleolake Chad until the 5th millennium BC 64 Climate Edit The Tibesti climate is substantially less dry than that of the surrounding Sahara Desert but rainfall events are highly variable from year to year 35 65 66 In the south of the range this variation is largely due to oscillations of the Intertropical Convergence Zone ITCZ which steadily moves northward toward northern Chad from November until August accompanied by humid monsoonal air Normally the ITCZ repels the Harmattan a dry trade wind that blows west or southwest from the Sahara Desert and brings rainfall to southern Tibesti However sometimes the front retires early before reaching the Tibesti leaving its southern portion dry 39 In the arid northern Tibesti where the monsoon has little influence storms are caused by episodic Sahara Sudanese weather systems 9 65 For example between 1957 and 1968 Bardai on the northern flank of the range saw an average of 12 mm 0 47 in of precipitation annually yet some years were completely dry while others saw 60 mm 2 4 in of rainfall 9 In general the range receives less than 20 mm 0 79 in of rainfall per year 34 However precipitation increases with altitude for example Trou au Natron 2 250 m 7 380 ft receives 126 mm 5 0 in annually When the rainfall coincides with low temperatures it can fall as snow 9 67 This occurs on average once every seven years 68 The average monthly maximum temperature is 28 C 83 F in the central Tibesti Mountains while the average monthly minimum is 12 C 53 F 69 Lows of 10 C 14 F are not uncommon Bardai located 1 020 m 3 350 ft above sea level experiences average temperatures ranging between 4 6 and 23 7 C 40 3 and 74 7 F in January between 14 4 and 34 C 57 9 and 93 2 F in April and between 19 4 and 36 7 C 66 9 and 98 1 F in August 9 The combination of high temperatures and low humidity results in potentially high evaporation rates ranging from 129 mm 5 in in January to 254 mm 10 in in May parching many enneris before they can exit the mountain range 69 70 Climate data for the central Tibesti Mountains 21 15 N 17 45 W 21 250 N 17 750 W 21 250 17 750 approximately 1 200 m 3 900 ft elevation 1901 2009Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec YearAverage high C F 18 1 64 5 21 70 25 77 29 8 85 7 34 2 93 5 36 2 97 2 35 7 96 3 34 94 33 1 91 5 28 6 83 5 22 7 72 9 18 8 65 8 28 1 82 7 Daily mean C F 10 3 50 5 12 8 55 1 16 5 61 7 21 70 25 3 77 6 27 3 81 2 27 81 26 5 79 7 25 1 77 1 20 7 69 3 15 1 59 1 11 6 52 8 19 9 67 9 Average low C F 2 6 36 7 4 6 40 3 8 1 46 5 12 4 54 3 16 5 61 7 18 4 65 1 18 8 65 8 18 6 65 5 17 1 62 8 12 9 55 3 7 4 45 4 4 3 39 7 11 8 53 3 Source 1 Global Species 69 Source 2 University of East Anglia Climatic Research Unit 71 Flora and fauna EditLike an island surrounded by ocean the ecology of the Tibesti Mountains is distinguishable from that of the surrounding desert 66 72 As such the mountains lie within their own biome the 82 000 square kilometer 31 700 sq mi Tibesti Jebel Uweinat montane xeric woodlands ecoregion along with the Jebel Uweinat a disjunct mountain range that also rises from the Sahara 650 km 400 mi to the east 11 66 Much of the ecoregion remains unexplored due to its remoteness and persistent political instability yet it is known to contain a number of endemic and endangered species Indeed the isolation of the region is a benefit to its flora and fauna serving as a sort of refuge allowing plants to grow untrammeled and animals to roam unmolested Nevertheless hunting is unregulated in the region and vegetation has suffered from overgrazing in the past 66 Flora Edit A gay acacia in Burkina Faso The flora in the Tibesti is Saharomontane mixing Mediterranean Sahara Sahel and Afromontane vegetation 66 73 Biodiversity and endemism levels are higher in the Tibesti than in the Air Mountains or the Ennedi Plateau although the vegetation s coverage is highly dependent on rainfall 74 75 Oases lie along the courses of the enneris such as Enneri Yebige which is virtually unexplored update 34 These oases which are more numerous to the north and west of the range are scattered with acacia figs palms and tamarisks 76 Most gueltas are lined with macrophytes including smooth flatsedge Cyperus laevigatus and branched horsetail Equisetum ramosissimum 76 and bryophytes including Oxyrrhynchium speciosum and species of Bryum 77 Egyptian acacia Vachellia nilotica syn Acacia nilotica grows near these water basins 76 Saharan myrtle Myrtus nivellei and oleander Nerium oleander grow between elevations of 1 500 and 2 300 m 4 900 and 7 500 ft in the western part of the range while Nile tamarisk Tamarix nilotica grows at similar elevations in its northern part 75 Downstream where the current of the enneris is slower and the riverbed is deeper there are dense thickets of Athel tamarisk Tamarix aphylla syn Tamarix articulata and arak Salvadora persica 78 Around the edge of the Tibesti where the canyons exit the range are doum palms Hyphaene thebaica 78 The banks of Mare de Zoui are home to dense stands of reeds Phragmites australis and Typha capensis along with sedges Scirpoides holoschoenus sea rush Juncus maritimus toad rush Juncus bufonius and branched horsetail E ramosissimum while pondweed Potamogeton spp grows in the open water Although the lake appears rich in phytoplankton it has not been thoroughly studied 40 75 To the south and southwest of the range between 1 600 and 2 300 m 5 200 and 7 500 ft elevation the wadis support woody species characteristic of the Sahel such as Egyptian balsam Balanites aegyptiaca grey leaved cordia Cordia sinensis red leaved fig Ficus ingens sycamore fig F sycomorus wonderboom F salicifolia and gay acacia Senegalia laeta syn Acacia laeta Chrysopogon plumulosus is the most common grass in the area Other plants have more Mediterranean characteristics such as globularia Globularia alypum and lavender Lavandula pubescens or the more tropical sweet Indian mallow Abutilon fruticosum and least snout bean Rhynchosia minima syn Rhynchosia memnonia 75 The liverwort Plagiochasma rupestre is found around the wadis at these elevations as are mosses of the genera Fissidens Gymnostomum and Timmiella 77 Sweet Indian mallow in Israel Saharomontane grasslands are found on the slopes plateaus and the upper portions of the wadis at elevations between 1 800 and 2 700 m 5 900 and 8 900 ft They are dominated by Stipagrostis obtusa and Aristida caerulescens as well some Eragrostis papposa locally In addition shrubs represented by jointed anabis Anabasis articulata Fagonia flamandii and Zilla spinosa dot this environment On the sheltered upper slopes of Emi Koussi is the endemic grass Eragrostis kohorica named after the volcano s crater 75 The vegetation above 2 600 meters 8 500 feet consists of dwarf shrubs which are generally limited to 20 to 60 cm 8 to 24 in in height and do not exceed one meter 3 ft The shrubbery consists of the species Pentzia monodiana Artemisia tilhoana and Ephedra tilhoana At the highest elevations of the Tibesti tree heath Erica arborea grows from moist crevices formed by early lava flows while 24 different species of moss provide substrate for the tree heath 75 Various genera of mosses also grow around fumaroles including Fissidens Campylopus Gymnostomum and Trichostomum 77 Lichens though rare in the dry climate of the Tibesti also grow at these elevations with green rock shield Xanthoparmelia conspersa scrambled egg lichen Fulgensia fulgens sunken disk lichen Aspicilia spp and Squamarina crassa found on the highest peaks 79 80 Fauna Edit Golden jackals similar to this specimen photographed in Israel are present in the Tibesti Mammals abound in the Tibesti 66 Bovids include the endangered addax Addax nasomaculatus along with the dorcas gazelle Gazella dorcas rhim gazelle Gazella leptoceros and a significant population of Barbary sheep Ammotragus lervia 66 81 82 Rodents are the most represented order of mammals and include the spiny mouse Acomys spp bushy tailed jird Sekeetamys calurus and the North African gerbil Dipodillus campestris syn Gerbillus campestris 66 Also present are cats such as the African wildcat Felis lybica and more rarely the cheetah Acinonyx jubatus as well as several canine species including the golden jackal Canis aureus fennec fox Vulpes zerda and Ruppell s fox Vulpes rueppellii 66 83 The striped hyena Hyaena hyaena may also occupy the range 66 African wild dogs Lycaon pictus formerly roamed the range although these populations are now extirpated 84 Olive baboons Papio anubis found as recently as 1960 are now likely extirpated as well 85 Bats are heavily represented in the Tibesti including the Egyptian mouse tailed bat Rhinopoma cystops Egyptian slit faced bat Nycteris thebaica and the trident bat Asellia tridens 86 The Cape hare Lepus capensis and the rock hyrax Procavia capensis also populate the area 66 Reptiles and amphibians on the other hand are sparse 66 Snake species include the braid snake Platyceps rhodorachis syn Coluber rhodorachis and the long nosed worm snake Myriopholis macrorhyncha syn Leptotyphlops macrorhynchus 66 Among the lizards are Bibron s agama Agama impalearis e the ringed wall gecko Tarentola annularis and the Sudan mastigure Uromastyx dispar 66 87 88 Mid 20th century herpetological studies noted the presence of brown frogs Rana sp and true toads Bufo sp 89 Many resident birds can be found in the Tibesti These include the crowned sandgrouse Pterocles coronatus bar tailed lark Ammomanes cincturus blackstart Oenanthe melanura syn Cercomela melanura desert lark Ammomanes deserti desert sparrow Passer simplex fulvous babbler Argya fulva greater hoopoe lark Alaemon alaudipes Lichtenstein s sandgrouse Pterocles lichtensteinii pale crag martin Ptyonoprogne obsoleta trumpeter finch Bucanetes githagineus and the white crowned wheatear Oenanthe leucopyga 90 The gueltas are flushed periodically each year by stormwater maintaining low salinity and supporting several species of freshwater fish These include the African sharptooth catfish Clarias gariepinus East African red finned barb Enteromius apleurogramma syn Barbus apleurogramma Tibesti labeo Labeo tibestii an endemic species and the redbelly tilapia Coptodon zillii 34 Population Edit Map of the Tibesti and surrounding area in French The town of Bardai located on the northern flank of the mountains at an elevation of 1 020 m 3 350 ft is the capital of the Tibesti region 9 91 It is connected to the town of Zouar to the southwest by a track that crosses Tarso Tousside 92 93 The village of Omchi is accessible from Bardai via Aderke or from the town of Aouzou via Irbi These rough tracks extend southward towards Yebbi Souma and Yebbi Bou and then follow the course of Enneri Misky The eastern half of the Tibesti is cut off from the western half and the eastern village of Aozi is accessible from Libya via Ouri 92 Zouar has an airport as does Bardai at Zougra 94 Bardai also has a hospital although the medical supply is very much dependent upon the prevailing political situation 10 Map of the Toubou population in Africa 95 The vast majority of the population is Teda one of the two ethnicities of the Toubou people However some clans are Daza the other Toubou ethnicity who left their traditional homes in the lowlands to the south and moved north to the Tibesti 96 The Toubou live primarily in northern Chad but also in southern Libya and eastern Niger 97 The Toubou language has two main dialects Tedaga spoken by the Teda and Dazaga spoken by the Daza 98 99 Despite their differences the two Toubou groups generally identify as a single ethnic group 100 The Toubou elect a chief the Derde from the Tomagra clan although never from the same family consecutively 101 102 103 Historically individual clans rarely had more than a thousand members and were quite dispersed throughout the Tibesti 104 In 2009 update the population of the Tibesti was officially estimated at 21 000 inhabitants As of 2017 update that number has risen to 54 000 inhabitants 105 Yet the Toubou in general are semi nomadic moving between the mountains and other regions and thus the Tibesti may have no more than 10 000 to 15 000 permanent residents 106 Traditional Toubou life is punctuated by the seasons divided between animal husbandry and agriculture 107 Twentieth century anthropological studies show Toubou particularly around palm groves living in primitive round huts built with stone walls bound by mortar or clay or built from clay or salt blocks In the highlands the buildings were built of stone forming circles 1 5 m 5 ft in diameter and one meter 3 ft high which served as shelters for goats or as granaries or as human shelters and defense structures 108 In other cases the Toubou lived in tents that could be easily moved between the fields and the palm groves 109 History EditHuman settlement Edit A Toubou woman in traditional attire There is evidence of human occupation of the Tibesti dating back to the Stone Age when denser paleovegetation facilitated human habitation 60 The Toubou were settled in the region by the 5th century BC and eventually established trade relations with the Carthaginian civilization 110 111 Around this time Herodotus mentioned the Toubou whom he labeled Aethiopians and described them as having a language akin to the cry of bats f 110 113 Herodotus further remarked on a conflict between the Toubou and the civilization of Garamantes based in present day Libya 113 Between AD 83 and 92 a Roman traveler likely a trader named Julius Maternus explored the territory of the Tibesti Mountains with or under the charge of the king of Garamantes 114 115 116 The Tibesti are suspected by modern historians to have been part of an unidentified country named Agisymba and Maternus s expedition may have been part of a broader military campaign by Garamantes against the populace of Agisymba g 115 117 In the 12th century the geographer Muhammad al Idrisi spoke of a country of Zaghawa negroes or camel herders that had converted to Islam The historian Ibn Khaldun described the Toubou in the 14th century 118 In the 15th and 16th centuries Al Maqrizi and Leo Africanus referred to the country of the Berdoa meaning Bardai the former associating the Toubou with the Berbers and the latter describing them as Numidian relatives of the Tuareg 119 Distribution of the clans of the Tibesti Mountains The Toubou settled in the Tibesti in several waves Generally newcomers either killed or absorbed the previous clans after battles that were often both long lasting and bloody 120 The Teda clans considered indigenous to the area were first established around Enneri Bardague Namely these clans were the Cerdegua Zouia Kossseda nicknamed yobat or hunters of well water and possibly the Ederguia although the Ederguia s origin may be Zaghawa and only go back to the 17th century These clans controlled the palm groves and made a peace pact with the Tomagra a nearby clan of camel herders who practiced Ghazw 102 It was upon the agreement to this pact at the end of the 16th century that power was consolidated under the Derde the principal regulator of the clans whose appointment is always made from the Tomagra clan 102 121 There is evidence of early Daza settlements in the Tibesti however these early clans the Goga Kida Terbouna and Obokina were assimilated into later Daza clans who arrived in the Tibesti between the 15th and 18th centuries possibly having fled the Kanem Bornu Empire in the southwest These later Daza arrivals include the Arna Souinga in the south Gouboda in the center west Tchioda and Dirsina in the west Torama in the northwest and center east and the Derdekichia literally descendants of the chief the products of a union between an Arna Souinga and an Emmeouia in the north 102 The Tibesti then played the role of an impregnable mountain stronghold for the newcomers 122 Meanwhile constant migration between the north and southwest of Chad along with significant mixing of the populations forged a significant degree of cohesion among the Toubou ethnicities Periods of territorial expansion in the 10th and 13th centuries and periods of recession in the 15th and 16th centuries likely coincided with more or less pronounced wet and dry periods 123 Several clans with traditions similar to those of the Donzas of the Borkou region south of the Tibesti settled in the range in the 16th and 17th centuries These include the Keressa and Odobaya in the west Foctoa in the northwest and northeast and Emmeouia in the north Several other clans the Mogode in the west Terintere in the north Tozoba in the center and Tegua and Mada in the south are originally clans of the Bideyat people who immigrated from the Ennedi Plateau southeast of Tibesti around the same time The Mada however have since largely emigrated to Borkou Kaouar and Kanem 102 The early 17th century also saw the arrival of three clans from the region of Kufra to the northeast The Taizera settled in the plateau in the center and west of the mass probably fleeing the Arab push into present day Libya According to oral tradition their leader was initially rejected by the Daza clans and lived in isolation until winning the favor of a Dirsina woman The Mahadena occupy the northeast quarter of the range and are likely from the Jalo oasis of Cyrenaica and thus related to the Mogharba Arab tribes although an alternative hypothesis is that they are of Bideyat origin Following years of conflict a branch of the Mahadena clan the Fortena withdrew to the western margin of the Tibesti The Fortena Mado Red Fortena settled there while the Fortena Yasko Black Fortena pushed further west to Kaouar 102 The Tuareg people intermixed with the Toubou clans especially with the early Goga clan which produced the Gouboda and with the later Arna clan which produced the Mormorea In both instances the new clans were placed under the authority of suzerain clans of the traditionally feudal Tuareg although they were eventually assimilated into the Toubou majority 124 The settlement of the Tibesti The indigenous Teda clans The Daza clans migrate from Kanem The Donza clans migrate from Borkou The Bideyat clans migrate from Ennedi Other clans migrate from Kufra Cyrenaica and Jalu Regional relations and colonization Edit In the mid 19th century the Ottoman Empire began a campaign of territorial conquest across northern Africa from its regional headquarters in Libya yet was unable to subdue the Tibesti 125 In 1890 to the chagrin of the Turks France and Great Britain signed a declaration recognizing a French zone of influence in northern Africa from the Mediterranean Sea down to Lake Chad 126 In response the Toubou allied with the Senussi Arabs of Libya and agreed that the southern half of the Tibesti could serve as a fallback base for the Senussi in their struggle against the French Colonial Army 127 As the Sennussis influence moved southward so did their headquarters which in 1899 was moved to the town of Gouro on the southeast flank of the range 92 128 129 The Senussi founded a Zawiya in Bardai which quickly promoted the total Islamization of the Tibesti 14 130 At the outbreak of the Italo Turkish War the Senussi allied with the Ottoman Empire and at the request of the Derde the Turks established garrisons in Tibesti beginning in March 1911 These garrisons fell apart a few months later when the Toubou attacked the Turkish troops 131 While the Italians occupied the Fezzan a French column entered the Tibesti in early 1914 from Kaouar 131 132 The region was at the heart of a dispute between the colonial powers 17 with the Italian Empire to the north and French West Africa to the south During World War I a Senussi revolt forced the Italians to temporarily withdraw from the Fezzan and the northeastern part of the Tibesti 131 Likewise fierce resistance from the Toubou forced the French troops to retreat southward from the Tibesti in 1916 133 After a period of internal disorder the Tibesti was reconquered by the French colonial empire in 1929 and the region was placed under the administration of French Equatorial Africa 113 133 134 Libya gained its independence from Italy in 1947 and was released from British and French oversight in 1951 135 Modern history Edit Chadian Civil War Edit Main article Chadian Civil War 1965 79 See also Claustre Affair Chad gained independence from France in 1960 and in 1965 the Chadian government led by Francois Tombalbaye imposed its administrative and judicial authority in the Tibesti 121 136 Mere days after the withdrawal of French troops from the region rebellion erupted in Bardai followed by numerous small battles over subsequent months and a more significant battle in Bardai in September In response the Tombalbaye government imposed travel and trade restrictions on the Toubou and voided the traditional power of the then Derde Oueddei Kichidemi 137 Kichidemi went into exile in Libya the following year and became a national symbol in Chad for opposition to the government 121 These events sparked the First Chadian Civil War which lasted from 1965 to 1979 121 138 In 1968 the French Army at the request of Tombalbaye intervened in an attempt to put an end to the rebellion However French General Edouard Cortadellas admitted their attempts to quell the Toubou were essentially hopeless remarking I believe we should draw a line below the Tibesti region and leave them to their stones We can never subdue them The French therefore focused their intervention on the center and east of the country leaving the Tibesti region largely alone 139 140 In 1969 Goukouni Oueddei a Teda leader and Hissene Habre a Daza leader emerged from the Tibesti to form the Second Liberation Army 141 In April 1974 the Second Liberation Army captured Bardai from the Chadian government and took hostage the French archeologist Francoise Claustre German doctor Christophe Staewen and Marc Combe an assistant to Claustre s husband and held them in the mountains 141 142 143 Staewen s wife and two soldiers of the Chadian army were killed 144 The West German government quickly paid the ransom and Staewen was released The French government sent the military officer Pierre Galopin to negotiate with the rebels but he was captured by the rebels and executed in April 1975 Marc Combe was able to escape in May 1975 The remaining hostages were released in January 1977 in Tripoli after France acceded to the rebel s ransom demand 142 143 The hostage incident known as L affaire Claustre caused a rift between the French and Chadian governments 141 145 Another rift formed between Goukouni and Habre which by 1976 had spread to the Second Liberation Army leaving one side commanded by Habre and the other commanded by Goukouni and supported by Libya 145 146 In June 1977 Goukouni s forces attacked the Chadian government stronghold in Bardai 147 148 The rebels also attacked Zouar These battles resulted in the death of 300 government troops 147 Bardai surrendered to the rebels on July 4 while Zouar was evacuated 147 The Chadian government led by Felix Malloum since Tombalbaye s overthrow in 1975 signed a peace agreement with Habre in 1978 although fighting with other rebel groups many aligned with Libya continued 147 149 Tibesti War Edit See also Chadian Libyan conflict Map showing the Aouzou Strip between Chad and Libya 150 In 1978 war broke out between Chad and Libya ostensibly over the Aouzou Strip a 114 000 square kilometer 44 000 sq mi borderland between Chad and Libya that extends into the Tibesti Mountains and is rumored to contain uranium deposits 113 150 151 152 In 1980 Libya used the strip as a base from which stage an attack led by Goukouni on the Chadian capital N Djamena located in southern Chad and controlled by Habre 153 N Djamena was toppled in December however under considerable international pressure Libya withdrew from southern Chad in late 1981 and Habre s Armed Forces of the North FAN took control of the entirety of Chad with the exception of the Tibesti where Goukouni retreated with his Libyan backed Government of National Unity GUNT forces 153 154 155 Goukouni then established a National Peace Government in Bardai and proclaimed it the legitimate government of Chad Habre attacked the GUNT in the Tibesti in both December 1982 and January 1983 but was repelled on both occasions Although fighting intensified over the next several months the mountains remained under the control of the GUNT and Libyan forces 156 By 1986 following a series of military defeats the GUNT had begun to disintegrate along with relations between Goukouni and Libya 157 158 159 In December Goukouni was arrested by the Libyans which spurred his troops to attack Libyan positions in the Tibesti forcing the Libyans to withdraw 159 160 Libya sought to retake Bardai and Zouar and sent a task force of 2 000 troops with T 62 tanks and heavy support by the Libyan Air Force into the Tibesti 159 The offensive started successfully expelling the GUNT from its key strongholds 161 The attack ultimately backfired however as it resulted in the prompt reaction of Habre who sent 2 000 soldiers to support the GUNT forces 162 Although the Libyans were only partially repelled from the Tibesti the broader campaign was a great strategic victory as it transformed a civil war into a national war against a foreign invader stimulating a sense of national unity never before seen in Chad 162 163 After a series of defeats in northeastern Chad Libyan forces withdrew fully from the Tibesti in March 1987 164 MDJT War Edit See also Chadian Civil War 2005 2010 Following a decade of relative peace in late 1997 the Tibesti saw the formation of the Movement for Democracy and Justice in Chad MDJT a rebel group opposed to Chadian president Idriss Deby 165 Numbering around 1 000 fighters at its peak between 2000 and 2001 and financed by Libyan Teda clans and the Libyan government the MDJT was able to take control of several towns in the Tibesti 166 Battles with the Chadian National Army ANT were particularly violent between 1998 and 2002 resulting in the deaths of between 500 and 850 MDJT rebels and a comparable number of ANT soldiers at locales across northern Chad including Bardai 167 Although civilian casualties were relatively limited many civilians were killed and injured by landmines and the war resulted in the displacement of a large portion of the local population 168 Between 1998 and 2010 the MDJT had established a weak government in the Tibesti region functionally independent from that of Chad 169 In 2002 however weakened by its isolation in the Tibesti and from a series of military defeats the MDJT split into several factions following the death of its leader Youssouf Togoimi 170 In 2005 under pressure from Libya the most legitimate MDJT faction signed a peace agreement with the Chadian government yet the war continued albeit at a lower intensity 171 From 2009 to 2010 the last of the MDJT rebels surrendered to the Chadian government 172 The legacy of decades of war continues to burden the Tibesti with a lack of government a warrior culture and a landscape strewn with thousands of landmines 17 169 Gold rush Edit Gold was discovered in the Tibesti Mountains in 2012 attracting prospectors from across the Sahel 173 The arrival of migrants has led to violent conflicts with the Teda locals a problem exacerbated by an influx of weaponry to the region due to the ongoing update wars in Darfur and Libya 174 Violence has also arisen as a result of disputes between the miners themselves for example around 100 people were killed in May 2022 over a banal dispute between miners 175 The increased migration has also increased drug traffic with the Tibesti lying along the trans Saharan smuggling route for South American cocaine destined for Europe 176 177 Nevertheless the gold discovery has benefited the impoverished region economically Many Tibesti residents have been able to purchase goods such as cars televisions and satellite telephones that they could not otherwise afford If by the grace of God gold had not appeared we would not even have anything to eat remarked one Tibesti prospector 178 Scientific exploration and research Edit Gustav Nachtigal the first European explorer of the Tibesti Due to its isolation and geopolitical situation the Tibesti Mountains were long unexplored by scientists 16 The German Gustav Nachtigal was the first European to explore albeit with great difficulty the Tibesti in 1869 179 While Nachtigal provided an accurate description of the population his expedition was fiercely opposed by the Toubou and his account discouraged any new adventure into the Tibesti for over 40 years 180 181 Later expeditions carried out between 1920 and 1970 yielded valuable information on the geology and petrology of the range 16 The French anthropologist Charles le Cœur and his wife Marguerite a geographer lived among the Teda of Tibesti between 1933 and 1935 Le Cœur was the first to closely study the Tibesti populace but the outbreak of World War II prevented him from publishing his research h 180 182 French Colonel Jean Chapelle published a book on the Toubou and their lifestyle in 1957 180 In 1965 the Free University of Berlin opened a geomorphological research station in Bardai however research was slowed due to the Chadian Civil War and the station was ultimately closed in 1974 183 184 Although the Tibesti is one of the world s most significant examples of intracontinental volcanism ongoing political instability and the presence of landmines means that today geologic research often must be conducted on the basis of satellite images and comparison with research on Martian volcanoes 185 Little public geologic research had been conducted in the Tibesti Mountains until the work of Gourgaud and Vincent in 2004 however an expedition in 2015 sought to assess the feasibility of establishing a new geoscience research station in Bardai 17 186 Climbing history Edit Although not an alpine climb Gustav Nachtigal ascended to 2 400 m 7 873 ft elevation as he traversed a pass abutting Pic Tousside during his exploration of the Tibesti in 1869 187 The Englishman Wilfred Thesiger summited the highest mountain in the range the 3 415 meter 11 204 ft Emi Koussi in 1938 1 188 In 1948 the Swiss Foundation for Alpine Research mounted an expedition under Edouard Wyss Dunant which scaled both the peak and needle of Botoum at 2 400 m 7 900 ft and 2 000 m 6 600 ft respectively 189 In 1957 Peter Steele led a University of Cambridge expedition that sought to conquer Tarso Tieroko which Thesiger had described as probably the most beautiful peak in Tibesti 190 After climbing two peaks situated on a ridge to the north i they attempted Tieroko but just 60 m 200 ft from the summit they were faced with a vertical crumbling rock wall and were forced to descend Following this defeat they took the opportunity to climb Emi Koussi 19 years after its first ascent by Thesiger and also Pic Woubou a prominent spire located between Bardai and Aouzou 191 Seven years later in 1965 a team led by the Englishman Doug Scott succeeded in climbing Tieroko 192 In 1963 an expedition under the Italian Guido Monzino ascended a peak in the massif of the Aiguilles of Sisse which despite rising only 800 ft 240 m above ground level proved very difficult 193 The Englishman Eamon Ginge Fullen scaled Bikku Bitti the highest peak in Libya at 2 266 m 7 434 ft in 2005 capping a successful Guinness World Records attempt 22 194 Due to the unstable political situation mountaineering in the Tibesti remains a challenging endeavor today 195 Economy EditNatural resources Edit Amazonite from Ethiopia Although gold was long known to exist in small quantities substantial deposits were discovered in 2012 196 197 Diamonds have also been found The mountains and their surroundings could contain significant quantities of uranium tin tungsten niobium tantalum beryllium lead zinc and copper 197 Amazonite is present and was reportedly mined by the ancient Libyan civilization of Garamantes 198 199 200 Salt is mined today and is an important source of income for the Toubou 99 The Soborom geothermal field the name of which means healing water j is known to locals for its medicinal qualities its pools are rumored to cure dermatitis and rheumatism after several days of soaking 8 As of the latest analysis in 1992 update Mare de Zoui and its surroundings were rarely visited aside from a nearby oasis However there are numerous small oases on the plains of Borkou near Emi Koussi which are extensively exploited This water is thought to be sourced from the Tibesti Mountains from where it flows underground before surfacing at these springs 40 Agriculture Edit There are accessible oases to the west and north of the range Where mosquitoes do not abound they support several villages such as Zouar where by the 1950s indigenous plant species had been largely replaced by some 56 000 date palms Phoenix dactylifera 202 203 The dates are harvested between late July and early August 109 In winter when reserves are depleted it is not uncommon for the cores of the dates and the fiber of the palms to be ground into a paste and consumed Some native palm species remain such as the doum palm Hyphaene thebaica from which the hard yet vaguely sweet fruit rinds are collected ground and consumed despite their low nutritional value 202 The banks of the enneris grow desert gourd Citrullus colocynthis which are collected in October to extract the bitter seeds which after being washed are ground to make flour 204 Women are customarily responsible for gathering wild grains on the tarsos in August 109 Horticulture is practiced on a small scale using traditional irrigation methods 203 The palm groves can also grow wheat millet and maize but the crops are spotty and sometimes swept away by flooding 109 In the 1950s update in total including barley the Tibesti produced 300 metric tons 330 short tons of cereals each year 202 On the plains of Borkou some fields are irrigated where cattle goats and dromedaries can drink 78 In the 1950s it was reported that goats and more rarely sheep numbered 50 000 heads while 8 000 dromedaries and 7 000 donkeys were being raised in the range 109 203 Since the droughts of the 1970s and 1980s dromedaries have come to dominate at the expense of cattle 99 Most animals spend the winter on the plateaus or in the high valleys They descend into the lower valleys in February just after the sowing of wheat and then return in June to allow harvest 109 Fishing is possible in the water holes 205 Traditionally agricultural product was traded once a year in exchange for fabrics 109 Tourism Edit A valley in the Tibesti Mountains As the Sahara s highest mountain range with geothermal features a distinctive culture and numerous rock and parietal artworks the Tibesti has tourism potential 206 207 208 However tourist accommodations are limited at best 209 In the early 2010s the French adventure travel company Point Afrique financed the repair of the airport at Faya Largeau some 200 kilometers 120 mi southeast of the Tibesti and established direct charter flights between Faya and Marseille Although the flights mainly brought tourists destined for the Ounianga Lakes UNESCO World Heritage Site there was considerable hope that they would also open the gates for tourism in the Tibesti 207 210 For example the Chadian government invested in a tourist camp along with walled pavilions in Bardai 207 209 Yet following the Libyan Crisis and France s intervention in Mali the French government pressured tour operators to prevent French tourists from venturing into the Sahara and the flights ended 207 As of 2017 update there are essentially only two tour operators in Chad run by Chadians and Italians and both based in N Djamena which offer all the tours that exist in Chad including trips to the Tibesti 207 Tours are typically multi week affairs with tourists accommodated in tents 208 211 They include exposure to Toubou cultural traditions and to the Tibesti s rock and parietal art 208 Continuing civil unrest and the presence of landmines pose a danger to tourists and despite the occasional tour group the Tibesti remains one of the most isolated places on Earth 17 208 212 Conservation Edit The resources available for conservation in the Tibesti are limited 66 In 2006 various non governmental working groups proposed a protected area to preserve the area s rhim gazelle and Barbary sheep populations 81 82 The protected area would be modeled after the Ouadi Rime Ouadi Achim Faunal Reserve to the south However due to economic and political barriers the project has not moved beyond the proposal stage 213 Nevertheless the establishment of two World Heritage Sites k in northern Chad in 2012 and 2016 has renewed hope that a similar feat might be achieved in the Tibesti 207 Art and literature EditRock and parietal art Edit Rock art in the Fezzan The Tibesti Mountains are renowned for their rock and parietal art 216 Around 200 engraving sites and 100 painting sites have been identified Many date as early as the 6th millennium BC long before the arrival of the Toubou The art has suffered the effects of time including weathering from sand blown by the wind 206 The earliest works often portray animals that have since died out in the region due to climate change including elephants rhinoceros hippopotamus and giraffes More recent art includes ostriches antelopes gazelles baboons and sheep Later works dated less than 2000 years old portray domesticated animals such as oxen and camels 206 217 Other engravings portray warriors dressed in feathers or spiked ornaments and armed with bows shields assegai or traditional knives 217 Still others portray celebrations and scenes from everyday life The walls of a canyon near Bardai have engravings that measure over 2 meters 7 ft in height including that of the man of Gonoa Gonoa being the name of the enneri that runs through the valley These primarily show hunting scenes The Tibesti art is unique in the Sahara because of the absence of inscriptions the relative lack of chariots and the low representation of camels and horses until comparatively recently 206 Other works Edit The Tibesti Mountains have inspired several contemporary works of art and literature The volcanic spires of the Tibesti along with a stylized sheep s head were displayed on a 20 CFA franc postage stamp issued by Republic of Chad in 1962 218 In 1989 French painter and sculptor Jean Verame used the natural surroundings of the Tibesti to create multidimensional land art works by painting rocks 219 220 The Tibesti range was featured in the 1958 short story Le Mura di Anagoor The Walls of Anagoor by the Italian novelist Dino Buzzati l In the story a local guide offers to show a traveler the walls of a great city that is absent from the maps The city is exceedingly opulent yet exists in total autarky and does not submit to local authority The traveler waits many years in vain to enter the Tibesti city 221 223 Notes and references EditNotes Edit An alternative theory holds that the name Toubou means bird because members of the Toubou communicate by whistling or because they run fast 2 Temperatures in the Tibesti can drop to 10 C 14 F 9 Pic Tousside is the highest point on the high plateau Tarso Tousside 7 It is unlikely that the earlier vegetation was significantly qualitatively different from that which exists today although Mediterranean flora would have been somewhat more common 60 Although usually ascribed to A impalearis the Tibesti agama may in fact be the Afrotropical species A agama 87 Herodotus described Aethiopian troglodytes located ten days from Awjila near a mound of salt water and palm trees being pursued by four horsed chariots of the civilization of Garamantes 112 Chapelle 1982 p 36 reasons that these were the Toubou as troglodytes are by definition cave dwellers the only caves near the described location are those of the Tassili n Ajjer and the Tibesti and the ergs neighboring the Tassili n Ajjer are unsuitable for chariots while the flat regs surrounding the Tibesti would have allowed chariots to pursue those who came to plunder the palm groves According to Oliver 1975 p 290 this populace was in all probability the Toubou Le Cœur was killed in action in Italy in 1944 182 The two peaks are The Imposter and Hadrian s Peak 190 At least one other source reports that the name instead means boiling water 201 Lakes of Ounianga 214 and the Ennedi Plateau 215 Although the plot of Le Mura di Anagoor takes place in the Tibesti 221 at least one English translation has moved it to Tibet 222 References Edit a b c d e Emi Koussi Global Volcanism Program Smithsonian Institution Retrieved September 7 2020 a b Room 2006 p 375 Shoup 2011 p 284 a b c d Permenter and Oppenheimer 2007 p 611 Salam Hammuda and Eliagoubi 1991 p 1155 Sola and Worsley 2000 p xi a b c Permenter and Oppenheimer 2007 pp 615 619 a b Beauvilain 1996 p 20 a b c d e f Hughes Hughes and Bernacsek 1992 p 3 a b Braquehais 2006 a b c d e Google Google Earth Map Google Earth Retrieved April 19 2021 a b c Roure 1939 p 1 Grove 1960 p 18 a b Bosworth 2012 Gourgaud and Vincent 2004 p 261 a b c Permenter and Oppenheimer 2007 p 609 a b c d e Permenter and Oppenheimer 2007 p 610 a b c d e f g h Hughes Hughes and Bernacsek 1992 p 1 Baldur 2018 p 9 a b c Permenter and Oppenheimer 2007 pp 615 616 Hellmich 1972 p 10 a b Braun and Passon 2020 p 1 a b c d e f g h i Beauvilain 1996 pp 15 20 Permenter and Oppenheimer 2007 pp 609 615 616 620 621 Permenter and Oppenheimer 2007 p 615 a b c d e f g Permenter and Oppenheimer 2007 p 619 Permenter and Oppenheimer 2007 pp 611 614 Permenter and Oppenheimer 2007 pp 609 611 615 Hughes Hughes and Bernacsek 1992 pp 1 2 18 20 Grove 1960 p 23 Chapelle 1982 pp 68 70 184 Chapelle 1982 p 67 Hughes Hughes and Bernacsek 1992 pp 1 2 a b c d e f Hughes Hughes and Bernacsek 1992 p 18 a b Hughes Hughes and Bernacsek 1992 pp 2 3 a b Grove 1960 pp 23 25 Hughes Hughes and Bernacsek 1992 pp 1 3 Hughes Hughes and Bernacsek 1992 pp 1 2 18 a b Hughes Hughes and Bernacsek 1992 p 2 a b c d Hughes Hughes and Bernacsek 1992 pp 18 19 Hughes Hughes and Bernacsek 1992 pp 3 18 Emi Koussi Synonyms and Subfeatures Global Volcanism Program Smithsonian Institution Retrieved September 7 2020 Tarso Toh Global Volcanism Program Smithsonian Institution Retrieved March 20 2021 Permenter and Oppenheimer 2007 pp 611 616 619 Pegram et al 1976 p 127 El Makkrouf 1988 p 964 Suayah 2006 p 568 Permenter and Oppenheimer 2007 pp 611 612 Permenter and Oppenheimer 2007 pp 611 616 Permenter and Oppenheimer 2007 pp 609 616 619 Permenter and Oppenheimer 2007 pp 619 620 Permenter and Oppenheimer 2007 p 621 Permenter and Oppenheimer 2007 pp 611 619 El Makkrouf 1988 p 951 Tarso Tousside Global Volcanism Program Smithsonian Institution Retrieved February 12 2021 Permenter and Oppenheimer 2007 pp 615 617 619 Permenter and Oppenheimer 2007 pp 617 619 Hagedorn 1997 pp 267 268 Hagedorn 1997 p 267 a b Hagedorn 1997 p 273 Hagedorn 1997 pp 268 270 273 Soulie Marsche et al 2010 pp 334 335 Maley 2000 p 121 Tourte 2005 p 11 a b Musch 2021 p 2 a b c d e f g h i j k l m n o Tibesti Jebel Uweinat montane xeric woodlands Terrestrial Ecoregions World Wildlife Fund Messerli 1973 p A143 Messerli 1973 p A140 a b c Climate Data for Latitude 21 25 Longitude 17 75 Global Species July 28 2011 Archived from the original on March 23 2017 Musch 2021 p 3 Climatic Research Unit CRU time series datasets of variations in climate with variations in other phenomena University of East Anglia Climatic Research Unit February 14 2017 Archived from the original on March 23 2017 Mies and Losch 1995 p 192 White 1998 p 243 Giazzi 1996 p 179 a b c d e f White 1998 pp 243 244 a b c Hughes Hughes and Bernacsek 1992 pp 18 20 a b c Schultze Motel 1969 pp 218 219 a b c Hughes Hughes and Bernacsek 1992 p 19 Mies and Losch 1995 p 196 Kappen 1973 p 311 a b Beudels 2008 a b Baseline Study 2009 p 13 Camps fabrer 1999 Ginsberg and Macdonald 1990 pp 17 18 Roos et al 2021 pp 410 415 Benda et al 2014 pp 10 34 126 a b Geniez 2011 p 27 Animals Committee 2006 p 69 Salvador 1996 p 1 Tibesti Massif BirdLife International Retrieved February 15 2021 Azevedo and Decalo 2018 p 495 a b c Ministere des Affaires etrangeres 2016 Tilho 1920 Thompson 2020 Mahjoub 2015 p 19 Chapelle 1982 p 6 Tubiana and Gramizzi 2017 p 106 Chapelle 1982 p 7 a b c Tubiana and Gramizzi 2017 p 30 Tubiana and Gramizzi 2017 p 29 Tubiana and Gramizzi 2017 pp 66 67 a b c d e f Chapelle 1982 pp 72 79 Baroin 1985 p 75 Chapelle 1982 pp 2 38 407 Tubiana and Gramizzi 2017 p 32 Tubiana and Gramizzi 2017 pp 32 106 Chapelle 1982 chpts 4 5 Chapelle 1982 pp 30 31 a b c d e f g Chapelle 1982 p 70 a b Chapelle 1982 pp 33 36 Beck and Huard 1969 p 228 Chapelle 1982 pp 35 36 a b c d Roure 1939 p 2 Oliver 1975 p 286 a b Huss 2006 Desanges 1964 p 713 Oliver 1975 p 290 Chapelle 1982 pp 8 54 Chapelle 1982 p 9 Chapelle 1982 chpt 2 sect 1 a b c d Collelo 1990 Chapelle 1982 p 41 Chapelle 1982 pp 41 44 72 79 Chapelle 1982 pp 79 81 Ricciardi 1992 pp 338 339 Ricciardi 1992 p 334 Chapelle 1982 pp 61 64 93 97 Chapelle 1982 pp 64 96 107 Ricciardi 1992 p 342 Ricciardi 1992 p 341 a b c Chapelle 1982 p 64 Ricciardi 1992 pp 346 347 357 a b Ricciardi 1992 p 358 Chapelle 1982 pp 2 64 Ricciardi 1992 pp 364 365 371 Fearon Laitin and Kasara 2006 pp 3 4 Fearon Laitin and Kasara 2006 p 4 Fearon Laitin and Kasara 2006 pp 4 12 Nolutshungu 1995 pp 62 63 Fearon Laitin and Kasara 2006 p 6 a b c Fearon Laitin and Kasara 2006 p 10 a b Arsenault 2006 a b Correau 2008 Zum Weinen 1975 a b Henderson 1984 chpt II Fearon Laitin and Kasara 2006 p 11 a b c d Higgins 1993 p 18 Arnold 2009 p 286 Fearon Laitin and Kasara 2006 pp 10 11 a b Jacobs 2011 Metz 1989 p 55 Ricciardi 1992 p 305 a b Metz 1989 pp 55 56 Nolutshungu 1995 p 186 188 Henderson 1984 Chpt III Nolutshungu 1995 p 188 Nolutshungu 1995 pp 213 214 Fearon Laitin and Kasara 2006 p 13 a b c Pollack 2004 loc 5452 Nolutshungu 1995 p xii Pollack 2004 locs 5452 5457 a b Pollack 2004 loc 5457 Nolutshungu 1995 pp 230 245 Pollack 2004 locs 5457 5462 Tubiana and Gramizzi 2017 pp 34 36 Tubiana and Gramizzi 2017 pp 36 37 Tubiana and Gramizzi 2017 pp 37 38 Tubiana and Gramizzi 2017 p 38 a b Tubiana and Gramizzi 2017 p 43 Tubiana and Gramizzi 2017 p 47 Tubiana and Gramizzi 2017 pp 37 48 52 Tubiana and Gramizzi 2017 pp 9 152 154 Tubiana and Gramizzi 2017 pp 10 78 79 Tubiana and Gramizzi 2017 pp 10 11 13 132 133 Around 100 dead in clashes between gold miners in Chad Africanews May 30 2022 Archived from the original on May 30 2022 Retrieved June 17 2022 Tubiana and Gramizzi 2017 pp 131 132 Tubiana 2016 Tubiana and Gramizzi 2017 p 102 Chapelle 1982 p 10 a b c Baroin 2003 p 11 Fisher and Fisher 1987 pp 236 237 a b Conklin 2013 search Le Cœur Italy Jakel 1977 p 61 Klitzsch 2004 pp 245 247 Permenter and Oppenheimer 2007 pp 609 610 University of Cologne 2015 L 1876 p 169 Thesiger 1939 pp 434 438 439 Expeditions supported by the SFAR Swiss Expedition in Tibesti Central Sahara Swiss Foundation for Alpine Research Retrieved April 20 2021 a b Steele 1964 p 268 Steele 1964 pp 268 270 Scott 2017 search Tibesti and climb Tieroko Cox 1965 p 126 Fastest time to climb the highest peaks in all African countries Guinness World Records Archived from the original on October 17 2020 Retrieved February 23 2021 Ingram 2001 p 39 Tubiana and Gramizzi 2017 p 78 a b Maoundonodji 2009 p 258 Chapelle 1982 p 32 Suayah 2006 p 564 Braun and Passon 2020 p 144 Kaiser 1972 p 17 a b c Chapelle 1982 p 69 a b c Hughes Hughes and Bernacsek 1992 pp 19 20 Chapelle 1982 pp 69 70 Hughes Hughes and Bernacsek 1992 p 20 a b c d Beauvilain 1996 pp 21 24 a b c d e f Kropelin 2017 a b c d Nine extraordinary tours 2019 a b Tubiana and Gramizzi 2017 p 71 Grolle 2013 Leadbeater 2019 Safety and security Chad travel advice GOV UK Foreign Commonwealth and Development Office Archived from the original on July 25 2019 Retrieved February 23 2021 Sahelo Saharan Antelopes Project 2006 p 11 Lakes of Ounianga UNESCO Retrieved February 14 2012 Ennedi Massif Natural and Cultural Landscape UNESCO Retrieved February 14 2021 Davis 1984 p 8 a b Chapelle 1982 pp 27 28 Timbre Head of sheep and Tibesti Colnect com Retrieved February 14 2021 Berque 1993 p 35 Jean Verame Encyclopedie Audiovisuelle De L art Contemporain in French Archived from the original on November 28 2020 Retrieved March 21 2021 a b Ferrari Tinazzi and D Erchia 2020 pp 13 14 Buzzati 1984 pp XI 27 Buzzati 1958 chpt 39 Bibliography Edit Animals Committee 22nd July 7 13 2006 Document 10 2 Annex 6c Uromastyx dispar Heyden 1827 CITES Lima Peru CiteSeerX 10 1 1 490 4004 Arnold Guy 2009 The A to Z of Civil Wars in Africa Scarecrow Press ISBN 978 0 8108 7048 2 Arsenault Claire September 6 2006 La captive du desert est morte The captive of the desert is dead in French Radio France Internationale Archived from the original on January 30 2011 Retrieved February 23 2021 Azevedo Mario J Decalo Samuel 2018 Historical Dictionary of Chad Rowman amp Littlefield ISBN 978 1 5381 1437 7 Baldur Gabriel 2018 Exploration of the Tibesti Mountains Re appraisal after 50 years In Runge Jurgen ed The African Neogene Climate Environments and People International Yearbook of Landscape Evolution and Paleoenvironments Paleoecology of Africa Vol 34 The African Neogene Climate Environments and People CRC Press ISBN 978 1 1380 6212 2 Baroin Catherine 1985 Anarchie et cohesion sociale chez les Toubou les Daza Keserda Niger Anarchy and social cohesion among the Toubou Daza Keserda Niger in French Cambridge University Press ISBN 978 0 521 30476 4 Baroin Catherine 2003 Du sable sec a la montagne humide deux terrains a l epreuve d une meme methodologie Dry sand to damp mountain two sites tested with the same methodology PDF Thesis in French Universite de Paris X Nanterre Archived PDF from the original on July 2 2013 Baseline Study C Etude de l etat des instruments politiques capacites institutionnelles et niveaux de sensibilisation en relation avec les changements climatiques et les aires protegees en Afrique de l Ouest Gambie Mali Sierra Leone Tchad et Togo PDF Report in French United Nations Environment Programme September 2009 Archived from the original PDF on May 21 2013 Beauvilain Alain 1996 Pages d histoire naturelle de la terre tchadienne The Natural History of the Chadian Land PDF in French Centre national d appui a la recherche OCLC 54307645 Archived PDF from the original on July 8 2018 Beck Pierre Huard Paul 1969 Tibesti carrefour de la prehistoire saharienne Tibesti crossroads of Saharan prehistory in French Arthaud OCLC 919879871 Benda Peter Spitzenberger Friederike Hanak Vladimir Andreas Michal Reiter Anontin Sevcik Martin Smid Jiri Uhrin Marcel 2014 Bats Mammalia Chiroptera of the Eastern Mediterranean and Middle East Part 11 On the bat fauna of Libya II Acta Societatis Zoologicae Bohemicae 78 1 162 Berque Augustin 1993 Beyond the Modern Landscape AA Files 25 33 37 JSTOR 29543834 Beudels Marie Odile January 30 2008 Chad Royal Belgian Institute of Natural Sciences Archived from the original on November 27 2007 Retrieved February 23 2021 Bosworth Clifford Edmund 2012 Tibesti In Bearman Peri J Bianquis Thierry Bosworth Clifford Edmund van Donzel Emeri Johannes Heinrichs Wolfhart P eds Encyclopaedia of Islam Brill doi 10 1163 1573 3912 islam SIM 7534 Braquehais Stephanie February 14 2006 Bardai village garnison au cœur du desert Bardai village garrison in the heart of the desert in French Radio France Internationale Archived from the original on February 18 2011 Retrieved February 23 2021 Braun Klaus Passon Jacqueline eds 2020 Across the Sahara Tracks Trade and Cross Cultural Exchange in Libya Springer doi 10 1007 978 3 030 00145 2 ISBN 978 3 030 00145 2 Buzzati Dino 1958 Les Murs d Anagoor Sessanta racconti Sixty stories in Italian Mondadori OCLC 459008523 Buzzati Dino 1984 Restless Nights Selected Stories of Dino Buzzati Translated by Venuti Lawrence Carcanet Press ISBN 978 0 85635 488 5 Camps fabrer Henriette 1999 Guepard Cheetah Encyclopedie berbere in French Vol 21 Edisud pp 3231 3234 doi 10 4000 encyclopedieberbere 1810 Chapelle Jean 1982 1957 Nomades noirs du Sahara les Toubous Black nomads of the Sahara the Toubou in French L Harmattan ISBN 978 2 296 28368 8 Collelo Thomas ed 1990 Chad Toubou and Daza Nomads of the Sahara Chad A Country Study Library of Congress LCCN 89600373 Archived from the original on February 28 2013 Retrieved November 21 2021 Conklin Alice L 2013 In the Museum of Man Race Anthropology and Empire in France 1850 1950 Cornell University Press ISBN 978 0 8014 6903 9 Correau Laurent August 18 2008 1974 1977 L affaire Claustre et la rupture avec Habre 1974 1977 The Claustre affair and break with Habre in French Radio France Internationale Archived from the original on March 16 2012 Retrieved February 23 2021 Cox A D M ed 1965 Expeditions PDF Alpine Journal 70 310 311 120 132 Archived PDF from the original on July 15 2020 Davis Whitney 1984 Representation and Knowledge in the Prehistoric Rock Art of Africa African Archaeological Review 2 7 35 JSTOR 25130436 Desanges Jehan 1964 Note sur la datation de l expedition de Julius Maternus au pays d Agisymba Note on the dating of Julius Maternus expedition to the land of Agisymba Latomus in French 23 4 713 725 JSTOR 41523030 El Makkrouf Ali Ahmed 1988 Tectonic interpretation of Jabal Eghei area and its regional application to Tibesti orogenic belt south central Libya S P L A J Journal of African Earth Sciences 7 7 8 945 967 Bibcode 1988JAfES 7 945E doi 10 1016 0899 5362 88 90009 7 Fearon James Laitin David Kasara Kimuli July 7 2006 Chad PDF Stanford University Archived from the original PDF on October 22 2016 Ferrari Massimo Tinazzi Claudia D Erchia Annalucia 2020 New Foundation Cities In Aste Niccolo Della Torre Stefano Talamo Cinzia Singh Adhikari Rajendra Rossi Corinna eds Innovative Models for Sustainable Development in Emerging African Countries PDF Springer doi 10 1007 978 3 030 33323 2 2 ISBN 978 3 030 33323 2 Fisher Alan George Bernard Fisher Humphrey J 1987 Nachtigal s Companions Paideuma 33 231 262 JSTOR 41409917 Geniez Philippe Padial Jose M Crochet Pierre Andre 2011 Systematics of north African Agama Reptilia Agamidae a new species from the central Saharan mountains Zootaxa 3098 1 26 56 doi 10 11646 zootaxa 3098 1 3 Giazzi Frank 1996 La Reserve Naturelle Nationale de l Air et du Tenere Niger The National Nature Reserve of the Air and Tenere Niger in French International Union for Conservation of Nature ISBN 978 2 8317 0249 0 Ginsberg Joshua R Macdonald David W 1990 Foxes Wolves Jackals and Dogs An Action Plan for the Conservation of Canids PDF International Union for Conservation of Nature Archived PDF from the original on March 5 2016 Gourgaud Alain Vincent Pierre M 2004 Petrology of two continental alkaline intraplate series at Emi Koussi volcano Tibesti Chad Journal of Volcanology and Geothermal Research 129 4 261 290 Bibcode 2004JVGR 129 261G doi 10 1016 S0377 0273 03 00277 4 Grolle Johann May 25 2013 Miracle in the Sahara Oasis Sediments Archive Dramatic History ABC News Archived from the original on March 13 2018 Retrieved February 23 2021 Grove Alfred Thomas 1960 Geomorphology of the Tibesti Region with Special Reference to Western Tibesti The Geographical Journal 126 1 18 27 doi 10 2307 1790425 JSTOR 1790425 Hagedorn Horst 1997 Tibesti In Tillet Thierry ed Sahara paleomilieux et peuplement prehistorique au Pleistocene superieur Sahara paleoenvironments and prehistoric populations in the Upper Pleistocene in French L Harmattan ISBN 978 2 7384 6086 8 OCLC 39372160 Hellmich Walter 1972 Hochgebirgsforschung Tibesti Zentrale Sahara arbeiten aus der Hochgebirgsregion High mountain research Tibesti Central Sahara work from the high mountain region in German Universitatsverlag Wagner OCLC 174113929 Henderson David H April 2 1984 War since 1945 Seminar Conflict in Chad 1975 to Present A Central African Tragedy Report Marine Corps Command and Staff College Archived from the original on August 28 2020 Retrieved March 21 2021 Higgins Rosalyn July 2 1993 The Reactions of Chad to the Libyan Occupation PDF Public sitting held on Friday 2 July 1993 at 10 a m at the Peace Palace President Sir Robert Jennings presiding in the case concerning Territorial Dispute Libyan Arab Jamahiriya Chad The Hague International Court of Justice Archived from the original PDF on July 27 2001 Hughes Ralph H Hughes Jane S Bernacsek Garry M 1992 Chad PDF A Directory of African Wetlands PDF International Union for Conservation of Nature ISBN 978 2 88032 949 5 Archived from the original PDF on September 24 2012 Huss Werner 2006 Agisymba In Cancik Hubert Schneider Helmuth eds Brill s New Pauly Brill doi 10 1163 1574 9347 bnp e108180 Ingram Stuart 2001 Africa Travel and Adventure PDF Summit British Mountaineering Council pp 37 39 Archived PDF from the original on November 11 2020 Jacobs Frank November 7 2011 The World s Largest Sandbox The New York Times Archived from the original on October 6 2019 Retrieved February 15 2021 Jakel Dieter 1977 The Work of the Field Station at Bardai in the Tibesti Mountains The Geographical Journal 143 1 61 72 doi 10 2307 1796675 ISSN 0016 7398 JSTOR 1796675 Kaiser Karlheinz 1972 Der kanozoische Vulkanismus im Tibesti Gebirge Cenozoic Volcanism in the Tibesti Mountains Berliner geographische Abhandlungen in German 16 9 34 doi 10 23689 fidgeo 2849 Kappen Josef 1973 Chapter 10 Response to Extreme Environments In Ahmadjian Vernon Hale Mason E eds The Lichens Elsevier doi 10 1016 B978 0 12 044950 7 50015 5 ISBN 978 0 12 044950 7 Klitzsch Eberhard H 2004 From Bardai to SFB 69 The Tibesti Research Station and Later Geoscientific Research in Northeast Africa PDF Die Erde 135 3 4 245 266 ISSN 0013 9998 Archived from the original PDF on May 26 2013 Kropelin Stefan July 4 2017 UNESCO Sites An Opportunity for Chad Interview Interviewed by Frederike Muller Deutsche Welle Archived from the original on July 31 2020 Retrieved February 12 2021 L A 1876 Voyages du Dr Nachtigall Voyages of Dr Nachtigal Le Globe Revue genevoise de geographie in French 15 167 178 Archived from the original on December 9 2020 Leadbeater Chris August 11 2019 The most beautiful country in the world that you re not supposed to visit The Telegraph Archived from the original on November 11 2020 Retrieved February 23 2021 Mahjoub A Monem 2015 Uncharted Ethnicities PDF Translated by Mathlouthi Othman Tanit Archived PDF from the original on February 17 2021 Maley Jean 2000 Last Glacial Maximum lacustrine and fluviatile Formations in the Tibesti and other Saharan mountains and large scale climatic teleconnections linked to the activity of the Subtropical Jet Stream Global and Planetary Change 26 1 3 121 136 Bibcode 2000GPC 26 121M doi 10 1016 S0921 8181 00 00039 4 Maoundonodji Gilbert 2009 Les enjeux geopolitiques et geostrategiques de l exploitation du petrole au Tchad The geopolitical and geostrategic issues of the exploitation of oil in Chad in French Presses universitaires de Louvain ISBN 978 2 87463 171 9 Messerli Bruno 1973 Problems of vertical and horizontal arrangement in the high mountains of the extreme arid zone central Sahara Arctic and Alpine Research 5 3 A139 A147 ISSN 0004 0851 JSTOR 1550163 Metz Helen Chapin 1989 Libya A Country Study PDF Library of Congress LCCN 88600480 Archived PDF from the original on February 21 2021 Mies Bruno Losch Rainer 1995 Relative habitat constancy of lichens on the atlantic islands Cryptogamic Botany 5 192 198 Ministere des Affaires etrangeres et du Developpement international direction des Archives pole geographique December 2016 Tchad Chad Map in French Ministry of Europe and Foreign Affairs Archived from the original on April 21 2021 Musch Tilman 2021 Exploring Environments through Water An Ethno Hydrography of the Tibesti Mountains Central Sahara Ethnobiology Letters 12 1 1 11 doi 10 14237 ebl 12 1 2021 1709 Nine extraordinary tours to Africa s unlikeliest destinations Wanderlust November 18 2019 Archived from the original on May 6 2020 Retrieved February 23 2021 Nolutshungu Sam C 1995 Limits of Anarchy Intervention and State Formation in Chad University of Virginia Press ISBN 978 0 8139 1628 6 Oliver Roland Anthony 1975 Fage John D Clark John Desmond Oliver Roland Anthony eds The Cambridge History of Africa PDF Vol 2 Cambridge University Press Archived PDF from the original on August 26 2020 Pegram William J Register Joseph K Jr Fullagar Paul D Ghuma Mohamed A Rogers John J W 1976 Pan African ages from a Tibesti Massif batholith southern Libya Earth and Planetary Science Letters 30 1 123 128 Bibcode 1976E amp PSL 30 123P doi 10 1016 0012 821X 76 90014 5 Permenter Jason L Oppenheimer Clive 2007 Volcanoes of the Tibesti massif Chad northern Africa Bulletin of Volcanology 69 6 609 626 Bibcode 2007BVol 69 609P doi 10 1007 s00445 006 0098 x S2CID 53463999 Pollack Kenneth M 2004 Arabs at War Military Effectiveness 1948 1991 Bison Books ASIN B003NHSEK0 Ricciardi Matthew M 1992 Title to the Aouzou Strip A Legal and Historical Analysis The Yale Journal of International Law 17 2 301 488 Room Adrian 2006 Placenames of the World 2nd ed McFarland ISBN 978 0 7864 2248 7 Roos Christian Knauf Sascha Chuma Idrissa S Maille Audrey Callou Cecile Sabin Richard Portela Miguez Roberto Zinner Dietmar 2021 New mitogenomic lineages in Papio baboons and their phylogeographic implications American Journal of Physical Anthropology 174 3 407 417 doi 10 1002 ajpa 24186 Roure Gil April 1 1939 Le Tibesti bastion de notre Afrique Noire The Tibesti bastion of our Black Africa PDF L Illustration in French No 5013 Archived from the original PDF on March 3 2016 Sahelo Saharan Antelopes Project Rapport de mission Prospections des zones prioritaires de conservation pour les Antilopes Sahelo Sahariennes au Tchad et identification de programmes de conservation developpement durable PDF in French Bonn Convention Archived from the original PDF on May 21 2013 Salam Mustafa J Hammuda Omar S Eliagoubi Bahlul A 1991 The Geology of Libya Volume 5 Elsevier ISBN 978 0 444 88844 0 Salvador Alfredo 1996 Amphibians of Northwest Africa Smithsonian Herpetological Information Service 109 1 43 doi 10 5479 si 23317515 109 1 Schultze Motel Wolfram 1969 Eine Moossammlung Aus Dem Tibesti Gebirge Nordafrika A Collection of Bryophytes from the Tibesti Mountains North Africa Willdenowia in German 5 2 217 220 JSTOR 3995401 Scott Doug 2017 The Ogre Biography of a Mountain and the Dramatic Story of the First Ascent Vertebrate Publishing ISBN 978 1 911342 80 9 Shoup John A 2011 Ethnic Groups of Africa and the Middle East An Encyclopedia ABC CLIO ISBN 978 1 59884 362 0 Sola M A Worsley David eds 2000 Geological Exploration in Murzuq Basin Elsevier ISBN 978 0 08 053246 2 Soulie Marsche Ingeborg Bieda Stephen Lafond R Maley Jean M Baitoudji Mathieu Vincent Pierre M Faure Hugues 2010 Charophytes as bio indicators for lake level high stand at Trou au Natron Tibesti Chad during the Late Pleistocene Global and Planetary Change 72 4 334 340 Bibcode 2010GPC 72 334S doi 10 1016 j gloplacha 2010 05 004 Steele Peter R 1964 A Note on Tieroko Tibesti Mountains PDF Alpine Journal 69 308 309 268 270 Archived PDF from the original on July 17 2020 Suayah Ismail B Miller Jonathan S Miller Brent V Bayer Tovah M Rogers John J W 2006 Tectonic significance of Late Neoproterozoic granites from the Tibesti massif in southern Libya inferred from Sr and Nd isotopes and U Pb zircon data Journal of African Earth Sciences 44 4 5 561 570 Bibcode 2006JAfES 44 561S doi 10 1016 j jafrearsci 2005 11 020 Thesiger Wilfred 1939 A Camel Journey to Tibesti The Geographical Journal 94 6 433 446 doi 10 2307 1787293 JSTOR 1787293 Thompson Greg September 3 2020 Stations National Center for Atmospheric Research Archived from the original on January 28 2021 Retrieved February 23 2021 Tilho Jean 1920 Carte provisoire de la region Tibesti Borkou Erdi Ennedi mission de l Institut de France 1912 1917 Provisional map of the Tibesti region Borkou Erdi Ennedi mission of the Institut de France 1912 1917 Map in French Institut de France Tourte Rene 2005 Histoire de la recherche agricole en Afrique tropicale francophone History of agricultural research in French tropical Africa PDF in French Vol I Aux sources de l agriculture africaine de la Prehistoire au Moyen Age Food and Agriculture Organization ISBN 978 92 5 205407 8 Archived PDF from the original on April 20 2021 Tubiana Jerome February 24 2016 After Libya a Rush for Gold and Guns Foreign Affairs Retrieved February 12 2021 Tubiana Jerome Gramizzi Claudio June 2017 Tubu Trouble State and Statelessness in the Chad Sudan Libya Triangle PDF Report Small Arms Survey Archived PDF from the original on October 23 2020 University of Cologne June 2 2015 Scientific Exploration of the Tibesti Mountains Cologne Researcher Headed Mission to the Peaks of the Sahara Desert Science Daily Archived from the original on January 25 2016 Retrieved January 17 2016 White Frank 1998 1986 La Vegetation de l Afrique Memoire accompagnant la carte de vegetation de l Afrique The Vegetation of Africa Report accompanying a vegetation map of Africa PDF in French Institut de recherche pour le developpement ISBN 978 2 7099 0832 0 Archived PDF from the original on August 4 2019 Zum Weinen Makes You Cry Der Spiegel in German September 15 1975 Archived from the original on April 15 2019 Retrieved February 23 2021 External links EditWikimedia Commons has media related to Tibesti Mountains The Tibesti Mountains University of Applied Sciences Burgenland Tibesti Jebel Uweinat montane xeric woodlands World Wildlife Fund Retrieved from https en wikipedia org w index php title Tibesti Mountains amp oldid 1093664781, wikipedia, wiki, book,

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