Tassili n'Ajjer Located in a place with an unusual landscape, reminiscent of the moon. On the territory of the Tassili Ager has the largest group of prehistoric artificial caves in the world, the walls of which survived more than 15,000 drawings and engravings that perpetuate the period of climate change, animal migration and evolution of human life in the Sahara from 6000 BC to the first century AD Impressive geological formation of the area, blurred sandstone which forms a "forest of the mountains"   I can complement the description