Signs of ancient humans found on plateau
Archaeologists have confirmed human activity at an altitude of 4,000 meters on the QinghaiTibet Plateau, dating back more than 10,000 years. Archaeologists with Qinghai Normal University and Qinghai archaeological research institute discovered a prehistoric layer of ash in Qinghai’s Golog Tibetan autonomous prefecture in 2013. On Aug 1, Hou Guangliang of Qinghai Normal University confirmed that the layer is residue of human activity. Dozens of stone tools were found at the same site, showing that prehistoric humans lived, hunted and made tools in the harsh environment more than 10,000 years ago. It is the oldest evidence of human activity found above 4,000 meters on the plateau.