Prehistory of Kangleipak
O. Kumar Singh is of the view that "Pre-Historic people used to settle in the hills during the Paleolithic and Mesolithic (Hoabinhian) culture while Neolithic people lived in both hills and valley. They came down to the valley at least by about 2000 BC." On the basis of the characters of the tool industry, the prehistory of Manipur is broadly classified into three periods.