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Ennedi Plateau

Plateau located in the northeast of Chad

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  • 8 chapters
A walled canyon in Chad . A large group of animals, probably camels, are gathered around a waterhole. Some are moving towards it, while others are already gathered around it. There is a patch of land
Desertman · CC BY-SA 3.0

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Landscape and climate

The Ennedi makes up an area of approximately 60,000 km2 (23,000 sq mi), as large as Switzerland, and its highest point is approximately 1,450 m (4,760 ft) above sea level. The Massif is composed of sandstone overlaying a Precambrian granite base. In the Ennedi, there are at least twenty perennial or semi-perennial springs, gueltas (desert ponds), and pools, but they rarely reach greater than a few dozen meters in the dry season. It is considered part of the Sahelian Acacia savanna, which extends across the entire continent which once contained diverse ungulates whose population has since been reduced. The landscape has geological structures, including towers, pillars, bridges, and arches, which serve as major tourist attractions. Interestingly, much of the sand found in the Sahara is due to the generation of dust in the Tibesti-Ennedi triangle.

Evidence of a change in climate occurred between 6000 BP, with a savanna region with ~250 mm annual rainfall, to ~150 mm annual rainfall 4300 BP. It later reached an annual rainfall of 50 mm around 2700 BP, similar to the amount of annual rainfall observed today. There are also monsoons common in the area, generating around 50–150 mm of rain per year. These natural disasters create a diverse mixture of vegetation within the area. However, precipitation allows for greater moisture in the thin soil during the winter months, with lower run-off. The mountains are also known to have a north-Sahelian climate in the southern region, with greater amounts of precipitation between the months of May and September. The rainfall is subject to the Intertropical Convergence Zone (ITCZ).

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