Tassili n'Ajjer (Tamazight, 'Plateau of the Rivers') is a mountain range in the Sahara desert in southeast Algeria, North Africa. It extends about 500 km from east-south-east to , and the highest point is Adrar Afao, 2158 m, at . The nearest town is Djanet, about 10 km southwest of the range (...) (from Wikipedia)