Lying at the foot of Heituo Mountain, 15 kilometers northwest of downtown Shuozhou, Zhiyu Site is a prehistoric human settlement dating back to the Paleolithic Period. It was discovered by the Chinese Academy of Sciences in 1963 and is now a major cultural relic protected at the provincial level.

Archaeologists unearthed a large number of tiny stone implements, plentiful animal fossils, hundreds of animal bones with carved marks, as well as a primitive weapon — a stone disc. The site dates back approximately 28,000 years. Designated as a provincial key cultural relic in 1965, it is one of the major late Paleolithic sites discovered in China in the 1960s, famous for its exquisite miniature stone artifacts and massive mammal remains.