Introduction to underground river exploration: "Yuquan Cave" is an interactive tourism project for self-driving raft underground river exploration. It is also the only project in China to develop self-driving raft underground river sightseeing adventure. The total length of the underground river in Ganquan is 600 meters, with twists and turns, running through the entire mountain. The stalactites in the cave are in various shapes, ingenious, magnificent, colorful, mysterious and beautiful.