Introduction to Bajie Cave: The Gaotan Sanjie Tan Waterfall Group under the Mangtong Dam is the most scenic. There is a Sanhuali River section from top to bottom. The Mangtong River breaks through the peak, and the rapids rush and rush. The eight-section dangerous shoal is formed, forming an eight-level waterfall, hence the name Eight-section Cave, with a total drop of 120 meters.