Introduction to Wolong Cave: Wolong Cave is on the left side of Longtang Lake. The underground river in the cave is connected to the Dagui River. It can only be reached by boat. The cave is 30 to 80 meters high and 10 to 20 meters wide. The cave is more than 500 meters long, and the inland water depth is 7 to 15 meters. The stalactites in the cave are unique in shape and in various poses. A huge skylight is formed at the entrance of the cave due to karst weathering, making the cave entrance like a natural bridge. After passing through, there is a new cave entrance. , so the locals call this cave Shuangmen Cave.