Paleoanthropologists have characterized the properties of raw stone materials that were selected and used by Early Pleistocene tool-makers at an Acheulian site in the Ethiopian Highlands between 1.6 and 1 million years ago. Handaxes made on side-struck flakes (a-c) and Kombewa flakes (d-f) from Melka Wakena, Ethiopia. Image credit: Tegenu Gossa & Erella Hovers, doi: 10.1007/s12520-024-02072-8. “The two earliest stone tool complexes, the Oldowan...
