Yugudong is one of the seven major scenic spots in Yesanpo, and is a natural scenic spot with Qiquan strange cave as the main body. It is located in the middle of Yesanpo Scenic Area, 100 kilometers from Beijing, 220 kilometers from Tianjin, 145 kilometers from Baoding, and 270 kilometers from Shijiazhuang. The fish valley cave is about 1800 meters long, divided into 5 layers, layer by layer, the scenery is strange, there are holes in the hole, the hole is connected. The sediment of a large amount of soil at the bottom of the cave adds a large tourist feature to the fish valley cave. It is very rare and realistic. The geological strangeness is unique. The landscape of stone flowers, cloud basins, goose tubes, geological relics and other landscapes are outstanding works given by nature to mankind. Stunning. Fish Valley caves resemble stone man, stone horse stalactites and strange stone statues, there is no cave. Entering the cave, the thousands of stalactites, stalactites, stone pillars and spacious and tall caves, the winding passages are like underground dragon palaces under the light, making people linger. The cave landscape is equipped with five-color lighting, crystal clear, colorful, with stone, stone pearl, stone stalactylic, stone tower, stone man, stone beast, stone flower, etc., swimming in the mysterious and quiet, the wonders are continuous. Ye Sanpo Fish Valley Cave is composed of sedimentary rock and limestone. As groundwater washes away year after year, the hard rock formations form caves, and the vortex formed by the water flows leaves a deep round hole at the top of the hole. Yesanpo Yugudong Scenic Area has many famous springs, Yuguquan, Shenyuquan, Shendongquan, Shentianquan four spring groups or win by water, especially Yugudong Cave is famous. The flow rate of Yugu Spring is0.42m3 per second. The spring water is cool and sweet, and the water is constantly flowing for many years. The water is rich in a variety of mineral trace elements that are beneficial to the human body. After testing, the spring meets the national high-quality drinking water standard and is a rare natural mineral water. The fish is a multi-scale shoveled jaw fish which is a world famous spring.