Tibesti Mountains

The Tibesti Mountains are a group of extinct volcanoes forming a mountain range in the central Sahara desert in the Bourkou-Ennedi-Tibesti prefecture of northern Chad. The northern slopes extend a short distance into southern Libya.

The mountains are the largest and highest range in the Sahara. The highest peak is Emi Koussi, 3415 m. Other summits include Kegueur Terbi (3376 m), Tarso Taro (3325 m), the active volcano Pic Tousside (3265 m) and Soborom (3100 m). While the high peaks themselves are all constituted of volcanic material, the mountains stand on broad uplifteded area possibly caused by a mantle plume.

The range has a substantially wetter climate than the arid surrounding desert; annual rainfall is estimated at five inches in some of the highest areas of the mountains.

The area has long been home to the Toubou people. The main town in the area is Zouar, while Bardaï and Aouzou are smaller settlements.

The mountains are known for their cave paintings, mostly dating from the 5th to the 3rd millennium BC, and for the geysers and hot springs around Soboroum.

References

• Gourgaud A. and P. M. Vincent. 2004. Petrology of two continental alkaline intraplate series at Emi Koussi volcano, Tibesti, Chad. Journal of Volcanology and Geothermal Research 129(4): 261-290.

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