Evidence of prehistoric human activity in western Tibet dating back to 8 – 10,000 years ago has been discovered by archaeologists, reports China’s official news agency Xinhua. More than 5,000 relics at a site in Ngari Prefecture include stoneware, some animal bones, burnt stones, and fire and ash pits. In addition a 4,000 year old prehistoric settlement is reported to have been discovered in Shigatse.