Emergence of Acheulean Hand Axe Technology

Around 1.76 million years ago, Acheulean hand axe technology emerged at sites such as Kokiselei 4 in Kenya. Early hominins created these bifacially worked stone tools with teardrop or oval shapes through multiple manufacturing stages. The tools required planning, spatial reasoning, and motor control to achieve symmetrical forms. Hominins used these versatile implements for butchering animals, processing plant materials, and possibly as status symbols. The Acheulean tradition persisted for over 1.5 million years across Africa, Europe, and Asia.