In the ancient times there used to be a reiver in fornt of Mount Wuzhou and it was called Wuzhou River. the Royao family of Northern Wei Dynasty mountain . Then a dam was constructed in front of the carves. One could imagine how magnificent it was at the time while visiting here.
The dam was filled with crushed stones and wastes soon after a general named Zhan Han worshipped Buddha at caves. He thought that stone Buddha could be damaged with river so close to the temple . So troops were sent to replace hte river four hundred meter to the south of the caves, which is renamed the Yungang part of the Ten Mile River.