Designated as World Heritage Site in 2007 (http://africanworldheritagesites.org/cultural-places/rock-art-pre-history/twyfelfontein.html ), Twyfelfontein rock engravings and paintings were dated back 2,000 to 10,000 years.
“Twyfelfontein is an ‘open-air gallery’ with the largest single concentration of rock art engravings in southern Africa. There are over 2000 rock engravings and a few rock paintings at Twyfelfontein. More than 200 giraffe and 100 rhino are shown as well as ostrich, impala, elephant and zebra. Predators like lion are scarce, although one particular lion is exceptional. Kudu, wildebeest and baboons are also rare in the engravings. Although human figures are common in the rock paintings, they rarely occur in the engravings. Some engravings are fragile or difficult to reach and are thus not accessible to visitors” ( Text from Twyfelfontein Visitor Center).