Archaeologists excavating the Longtan site in Yunnan province, on the southwestern edge of the Tibetan Plateau, uncovered hundreds of stone artifacts ... ancient human possibly made stone tools ...

During the Oldowan age, a time period named for stone artifacts found in the gorge, ancient humans used tools created by striking one rock against another to chip off flakes, a process that ...

At the site, the researchers found stone tools and the first ochre pieces ever discovered in Tibet. Ochre is a red-colored rock used in ancient art. Stone tools found at the site resemble those ...