Between Huangtupo and Xiaotuoluo natural bridges. Qijiehe River runs from Huangtupo natural bridge and changes to free flow and captures another earth surface river in front of gorge, therefore, the water yield increases. However, in the middle of gorge, Qijiehe River is captured by Youcaichong underground river to form Youcaichong dry valley, Youcaichong Cave and Xiaotuoluo natural bridge.

Main development parameters of Youcaichong Gorge