animal tracks and footprint - cave paintings and petroglyphs at tamezguida in tassili najjer national park, algeria

abstract acacus africa ajjer akakus algeria algerie animal arid boumediene carving cattle colorful desert djanet dry erg footprint formation geology hamada heritage hill illizi landscape mammal mountain najjer national nature noires outdoor parietal park pattern petroglyph reg rock sahara scenic sculpture shadow stone tadrart tamezguida tassili texture track tracks unesco