The Early Stone Age lithic assemblages of Gadeb (Ethiopia) and the Developed Oldowan/early Acheulean in East Africa

The Early Stone Age sites of Gadeb (Ethiopian South-East Plateau) were excavated under the direction of Desmond Clark in the 1970s. Dated to between 1.45 and 0.7 Ma, Gadeb proved that humans had already occupied high altitude areas in the Lower Pleistocene. Despite the importance of the Gadeb sites, their lithic assemblages were never published in detail, and no review of the stone tools has ever been reported since the original 1970s study. This paper updates the information available on Gadeb by presenting a systematic review of the lithic technology of several assemblages. The objectives are to evaluate the technological skills of Gadeb knappers and to contextualize them into the current discussion of the origins of the Acheulean and its possible coexistence with the so-called Developed Oldowan in East Africa.