Introduction to Yugu Cave: Yugu Cave is located in the middle of Yesanpo Scenic Area. Yugu Cave is a scenic area dominated by strange springs and strange caves. On the east bank of Xiaoxi River, 2 kilometers away from Zishikou Village, there is a spring, also known as "Yugudong Spring". The spring water is clear and flows continuously, with an average of 0.42m3/s. It is famous for the fish that emerge from the spring mouth before and after the Guyu Festival every year. The scientific name of this fish is "scaly shovel-jaw fish" and is commonly known as "stone mouth fish". The tail is about 350g, with black spine and white belly. It is delicious and delicious. Residents often use baskets to catch it at the mouth of the spring. The annual catch is more than 1,000kg. It can be called a wonder of Sanpo and is also recognized as one of the eight strange springs in China.