Ancient drawings (petroglyphs) on sandstone rock, dating back 6000 years to the early stone age, of camels and also animals no longer found in the area, Twyfelfontein, UNESCO World Heritage Site, Namibia, Africa

color image photography outdoors no people nobody day scenic blue sky clouds ancient arid petroglyph sandstone rock rocks animal drawings old unesco world heritage site travel travel destinations vertical scenics nature rock ancient civilization arid climate petroglyphs sandstone rock art rock drawings animal representation twyfelfontein unesco world heritage site namibia africa