Labels:text | museum | wall | art | indoor | rock OCR: Bed l The Oldowun industry is generally known for its chopper. These are primitive tools in which one edge of a water-worn cobble wos crudely floked to form a jogged cutting edge. Although choppers are the most common tools, there are also small tools, such os seropen and chitela, that were used for light work. At DX, the earliest Oldowon living alte known in the Gorge, a tool - kit of at least six recognisatse types was in use, Thia sito has been Cated at about 1-a million years coe.