New evidence for the expansion of an Upper Pleistocene population out of East Africa, from the site of Station One, northern Sudan

Evidence for a hunter-gatherer range-expansion is indicated by the site of Station One in the northern Sudan, a surface scatter of chipped stone debris systematically collected almost 40 years ago, though not studied until present. Based on technological and typological correlates in East Africa, the predominant use of quartz pebbles for raw material, and the production of small bifacial tools, the site can be classified as Middle Stone Age. While often appearing in East African assemblages, quartz was rarely used in Nubia, where ferrocrete sandstone and Nile pebble were predominantly used by all other Middle Palaeolithic/Middle Stone Age populations. Additionally, faconnage reduction is characteristic of lithic technology in East Africa in the late Middle Stone Age, while Middle Palaeolithic industries in the Nile Valley display only core reduction. It is proposed this assemblage represents a range-expansion of Middle Stone Age hunter-gatherers from East Africa during an Upper Pleistocene pluvial.