Who were the original people that occupied South Africa, and how far back do we go to find out? Beneath the dolomitic outcrops and the grasslands of an area in the north east of South Africa known as the cradle of humankind, lies an extensive series of underground caverns that have preserved clues of our most ancient past. Declared a World Heritage Site in 1999 by UNESCO, the area embraces Sterkfontein, Swartkrans, Kromdraai and environs. Research in the area has shaped much of our thinking about the development of Homo sapiens, and fossil finds have proved beyond doubt that humanity originated in Africa - and even suggest that the emergence of our own species may well have happened in South Africa.