The upper palaeolithic age coincided with the last phase of the ice age when the climate became comparatively warmer and less humid. Emergence of Homo sapiens. The period is marked by innovation in tools and technology. A lot of bone tools, including needles, harpoons, parallel-sided blades, fishing tools and burin tools. Major sites of Upper Palaeolithic age Bhimbhetka (South of Bhopal) – hand axes and cleavers, blades, scrapers and a few burins have been found here. Belan Son Chota Nagpur plateau (Bihar) Maharashtra Orissa and The Eastern Ghats in Andhra Pradesh Bone tools have been found only at cave sites of Kurnool and Muchchatla Chintamani Gavi in Andhra Pradesh.