The Tassili n'ajjer is located in a place with an unusual landscape reminiscent of the moon. On the territory of Sites-Ager, are the largest group of prehistoric artificial caves in the world, the walls of which are preserved more than 15,000 drawings and engravings, commemorating the period of climatic changes, animal migrations and the evolution of human life in the Sahara from 6000 BC to the first centuries A. D. the Impressive geological formations of this area, eroded Sandstone which forms the "forests of the mountains" I can add description