This may have allowed rapid expansion of humans out of Africa and colonization of areas of the world such as Australia by 60–50,000 years ago. In southern Africa, early modern humans regularly used sea caves as shelter starting about 180,000 years ago when they learned to exploit the sea for the first time. There is numerous evidence for other early human species inhabiting caves from at least one million years ago in different parts of the world, including in China at, in South Africa at the Cave of Hearths, and in Europe at, in Indonesia, and the in southern Siberia. Caves do form in the dolomite of the Ghaap Plateau, including the Early, Middle and Later Stone Age site of however, the caves that form along the escarpment's edge, like that hypothesised for the Taung Child, are formed within a secondary limestone deposit called.
