Oldowan
The Oldowan was a widespread stone tool archaeological industry in prehistory. These early tools were simple, usually made with one or a few flakes chipped off with another stone. Oldowan tools were used during the Lower Paleolithic period, 2.6 million years ago up until at least 1.7 million years ago, by ancient Hominins across much of Africa. This technological industry was followed by the more sophisticated Acheulean industry. The term Oldowan is taken from the site of Olduvai Gorge in Tanzania, where the first Oldowan stone tools were discovered by the archaeologist Louis Leakey in the 1930s. However, some contemporary archaeologists and palaeoanthropologists prefer to use the term Mode 1 tools to designate pebble tool industries, with Mode 2 designating bifacially worked tools, Mode 3 designating prepared-core tools, and so forth. Classification of Oldowan tools is still somewhat contentious.
