Introduction to Shuanglong Cave: Shuanglong Cave is located on the edge of the tourist road from Wulong County to Fairy Mountain. One kilometer further forward is the Fairy Mountain Forest Farm and Qiaozixi Reservoir. There are two adjacent springs here, sandwiched between two huge stone layers, gush out from the bottom of the green peaks and green ridges, day and night, year after year, and the water is as thick as a barrel.