The barren surroundings and rock-strewn slopes seem a most unlikely place for any human habitation, but there is a small spring near the base of the hill and this has been providing water to animals for thousands of years. The well-preserved engravings and paintings (more than 2,500 of them!) are more than 10 000 years old, going back to the early Stone Age. The well-preserved engravings executed by cutting into the sandstone, show-hunting scenes and depict different animals such as rhino, antelope, ostrich, giraffe, lion and elephants. Be prepared to spend a good couple of hours here, for some good photographic opportunities go in the late afternoon to this U-shaped valley of unusual reddish sandstone formations and terraces. South-west of Twyfelfontein is the Dorsos Crater, a site of interesting fossil remains. South of Twyfelfontein is the desolate landscape of the Burnt Mountain, with vividly coloured shale and basalt as if burnt in an inferno. Another geological curiosity nearby is the perpendicular slabs of basalt known as the Organ Pipes