Twyfelfontein (Afrikaans: uncertain spring), officially known as ǀUi-ǁAis (Damara/Nama: jumping waterhole), is a site of ancient rock engravings in the Kunene Region of north-western Namibia. It consists of a spring in a valley flanked by the slopes of a sandstone table mountain that receives very little rainfall and has a wide range of diurnal temperatures.
The site has been inhabited for 6,000 years, first by hunter-gatherers and later by Khoikhoi herders. Both ethnic groups used it as a place of worship and a site to conduct shamanist rituals. In the process of these rituals at least 2,500 items of rock carvings have been created, as well as a few rock paintings.
Some of the rock paintings and carvings have puzzled archeologists for decades, for example paintings of penguins, sea lions and flamingoes… animals that never existed in the area. Additionally, some of the stones would appear to have been carved as instruments, game boards and tools.
Add to that the fact that Namibia is the home of the Khoisan Languages – a set of African “click” languages that do not belong to any other language family – and this is definetly a place to visit!
(mostly from from WikiPedia)