Photo shows the the scenery of Shuidonggou scenic spot in northwest China's Ningxia Hui Autonomous Region.

As the only Paleolithic Age historical site to be officially excavated in the Yellow River Region, the Shuidonggou site presents a vivid picture of ancient life 30-thousand years ago. The site was discovered in 1923 and was among the first paleolithic sites found in China. For the past 90 years, scientists have unearthed more than 50 thousand stone implements and more than 100 pieces of animal fossils after five rounds of excavations.[China.org.cn]