Introduction to Banbu River Cave Group: Not far from Banbu River Hot Spring, there is a group of caves. The larger one can accommodate a thousand people, while the smaller one can only accommodate more than ten people. The caves are connected to each other, and the caves are stacked on top of each other. There are inner caves and outer caves, and the caves have different scenery. Walking in the cave, it seems like you have strayed into a maze. Without guidance, it is absolutely difficult to get out of the cave.