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The range is composed largely of sandstone. Erosion in the area has resulted in nearly 300 natural rock arches being formed, along with many other spectacular landforms.
Because of the altitude and the water-holding properties of the sandstone, the vegetation is somewhat richer than the surrounding desert; it includes a very scattered woodland of the endangered endemic species Saharan Cypress and Saharan Myrtle in the higher eastern half of the range. The range is also noted for its prehistoric rock paintings and other ancient archaeological sites, dating from glacial times when the local climate was much moister, with savannahSavannah may refer to the following articles Cities Savannah, Georgia Savannah, Missouri Savannah, New York Savannah, Tennessee Other An alternate spelling of savanna a type of grassland GNU Savannah an aggregation of software development projects affilia rather than desert.
Much of the range, including the cypresses and archaeological sites, is protected in a National parkThis article is about national parks. For the articles about the towns of National Park, see National Park, New Jersey and National Park, New Zealand. National parks are reserves of land, usually owned by national governments, that are protected from most, Biosphere ReserveA Biosphere Reserve is an international conservation designation for reserves designated by UNESCO under the MaB (Man and the Biosphere) Programme. Biosphere Reserves are areas of terrestrial and coastal / marine ecosystems, where, through appropriate zon and World Heritage SiteA UNESCO World Heritage Site is a specific site (such as a forest, mountain range, lake, desert, building, complex, or city) that has been nominated for the international World Heritage program administered by UNESCO. The program aims to catalogue, name,, the Tassili n'Ajjer National Park.
The nearest town is Djanet , about 10 km southwest of the range.
Mountain ranges Algeria