Introduction to Dayou Cave: Dayou Cave is a limestone cave with a height of 30 to 40 meters, a width of 20 to 30 meters, and a length of more than 100 meters. There is a gurgling stream that flows out in autumn and winter along the right side of the cave, and flows into the cave. Youyang River. Walking up the stream into the cave, there are walls on both sides of the cave. For about half a mile, it suddenly becomes clear that there is a different world. Among them, there are more than ten acres of farmland, surrounded by mountains and cliffs, as if isolated from the world.