Twyfelfontein   
Twyfelfontein (Doubtful Spring), at the head of a grassy valley, is one of the most extensive galleries of rock art in Africa.
The original name of this water source in the Aba-Huab Valley was Ui-/Ais (Surrounded by rocks), but in 1947 it was renamed
by European settler D. Levin, who deemed its daily output of one cubic metre of water insufficient for life in the harsh environment.
The 6000-year-old Twyfelfontein works aren't paintings but engravings, or petroglyphs, executed by cutting through the hard patina covering the local sandstone.
    ©2004 by Thomas Baur