The Tassili n'Ajjer is a mountain range in the Sahara desert in southeast Algeria, North Africa. The highest point is Adrar Afao, 2158 m. The nearest town is Djanet, about 10 km southwest of the range.
Much of the range, including the cypresses and archaeological sites, is protected in a National park, Biosphere Reserve and World Heritage Site, named the Tassili n'Ajjer National Park. It's one of the largest national parks in the world, with about 72 000 km2.
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Sources : Wikipedia, WCPA, Natural Arches
