Only a few minutes’ drive from Johannesburg, nestling in the peaceful Sterkfontein valley, you will discover the Cradle of Humankind, a World Heritage Site, and certainly the world’s richest hominid site. There are 600 limestone caves discovered on the site which includes the Sterkfontein Caves. The fact that this is the site  where the 2.3-million year-old fossil Australopithecus africanus(nicknamed "Mrs. Ples") was found in 1947 by Dr Robert Broom

The universal value of this site cannot be over-emphasised, because it contains a complex of palaeo-anthropological sites, which have yielded some of the most valuable evidence, world-wide, of the origins of modern humans, therefore the name “Cradle of Humankind”.