Rock engraving of people, neolithic rock art of Tinterhert, Dider Valley, Tassili n'Ajjer National Park, Unesco World Heritage Site, Wilaya Illizi, Algeria, Sahara, North Africa, Africa

africa african african aged algeria algerian area areas art attraction attractions carving carvings conservation day daylight daytime dider drawing during engraving engravings exterior exteriors famous heritage historic historical historically history illizi known najjer national national natural nature neolithic nobody north of old outdoor painting paintings park park parks people petroglyph petroglyphs petrograph petrographs photo photos pictogram pictogramme pictogrammes pictograms pictograph pictographs preserve preserves renowned reserve reserves rock rock sahara sanctuaries sanctuary seeing shot shots sight sights site site sites sites tassili the tinterhert tourist unesco unesco valley well well known wilaya wildlife work works world worth