Large, area is also; soup, Japanese hot spring bath is also; marsh, pool marsh is also; big soup marsh, a large hot spring pool is also. However, this pool cannot be soaked. The big soup marsh is one of the five deadly hot springs in the world. The hot spring water from the underground is high and there is a certain toxic gas composition. There is also one in Japan that is not suitable for soaking. It is Hell Valley Monkey Hot Spring, but Hell Valley Hot Spring Monkey is soaking. People are not soaking in the high probability is afraid of monkey siege... Datang Marsh is the source of the nearby hot spring hotel, and some spring water is also introduced in the local area. After cooling, tourists can take a foot bath and soak in the marsh. Of course, this place is still not recommended to stay for a long time. The gas coming out of the ground is harmful.