The area is a volcanic area, rich geothermal and precipitation make the hot springs the hot springs on the island, known as "Japan's first soup". There are hot spring hotels and shops on both sides of the hot spring street, and many of the goods in the store are related to ghosts. Walking around the town, you can see many sculptures about ghosts, and there are various sacrifices in different seasons.

Walking along the mountain from Hell Valley, you will come to another scenic spot formed by volcano - Datang Marsh. A hot spring stream overflowing from Datang Marsh is available for tourists to soak their feet. Inside is black volcanic mud, soaking very comfortable.

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.

Datang Marsh is located near Hell Valley. It was originally the exit left when the volcano erupted. The hot spring water here is high temperature, more than 100 degrees. The spring water used in other hot spring hotels can be said to be the source of the hot spring. You can feel this natural hot spring up close. There is a free foot bath for visitors to experience. If you want to enjoy other hot springs, or return to the hotel, many hotels can feel the pure Japanese soup.

从地狱谷到大汤沼的路并不好走，尤其我去的时候下过雪，本来路就相当崎岖，再加上路滑且有泥泞，走得时候务必小心，年纪大的朋友不建议深入，安全第一。对于没见过的人来说，第一次还是蛮震撼的，看着飘渺的烟雾不断升起，犹如仙境一般。天气和时间允许的话还是建议走一下的

积雪太厚，无法直接从地狱谷穿过来，只能从大路走或者再坐两站道南巴士到终点，但是巴士下来也要继续向山上走一点的。足汤还在对外开放，大正地狱啥的都关了。我们体验了一哈足汤，真是天然极了，就是这种开放的环境温泉不是很热了～

先到地狱谷，再沿着指示牌走不会走错路。只是大雪天，冰天雪地白茫茫一片，台阶上又容易结冰，如果没有冰爪真的很容易摔，眼看着一位爸爸抱着儿子下山走台阶路时摔了好几次，看着都觉得疼。开始向大汤沼出发已经下午3点多快4点了，一心以为都很近，很快就能走到。谁曾想啊，只见一个个路牌说还有多少米，感觉没有尽头啊~~而且不停地上坡，一会儿又下坡，有些坡还挺陡，靠边上的绳子拉着才能安全下去。这一路走得生无可恋啊！冬天太阳下山又早，担心一会儿天黑了还在走山路，多吓人！好不容易到大汤沼了，似乎游客突然都集中出现了，满心以为天然足汤就在附近了，结果又一块指示牌，还要走1000多米貌似，天呐~看到游客都不准备过去了，而且天色也不早了，但是想着都一路走到这里了，咬咬牙坚持到最后。于是，继续前行！几乎是前后都没见什么人，一路摸爬滚打，终于在太阳下山前到了，也终于在这里看到了人气。。真心一路上都没人啊。大家都欢快地泡着脚，赶紧享受下，走了一路，泡进温热的水里，消除疲劳。里面貌似都是黑黑的沙子，水温不高，温温的。享受了一会儿，大家也都陆续走了，毕竟天色已晚，赶紧回程。回去的路途依然遥远，而且同样上坡下坡，感觉大雪天愿意到这里的都是真爱！回到温泉街，都已经天黑了。这一天的消耗绝对超预期了！