The archaeology ranges in time from the Middle Stone Age to traditional societies, and the sites consist of caves, rock shelters, seasonal camps, and settlements. The large number and diverse types of artefacts make it the richest site yet discovered in southern Africa. | The archaeology ranges in time from the Middle Stone Age to traditional societies, and the sites consist of caves, rock shelters, seasonal camps, and settlements. The large number and diverse types of artefacts make it the richest site yet discovered in southern Africa. |