Cholpon-Ata. There is an Open Air Museum , sometimes referred as a Stone Garden , which covers some 42 hectares and contains a number of prehistoric monumental structures (stone circles, tombs, the remains of a boundary stone wall, balbals) and Petroglyphs (dating from the II millennium BC up to the Middle Ages upto the VI century AD).
San Rock Art (Botswana). 'The Tsodilo Hills, Botswana’s only Unesco World Heritage Site, are sometimes referred to as the ‘Louvre of the Desert’. More than 4000 ancient paintings, many dating back thousands of years, adorn the caves and cliffs of these picturesque mountains, which remain a sacred site for the San people.' http://www.lonelyplanet.com/botswana