The "Yama no Yakuyu (medicated bath in the mountain) " that you can enjoy the four kinds of sources

Sonroku-Onsen is a hot spring with an atmosphere of old-fashioned hot spring cure, and it is a hot-spring inn, featuring the hot-spring huts lining along the river. It is necessary to walk for about ten minutes from the parking lot to the inn, because you cannot drive there. However, the old hot-spring inn at the end of the forest road has nostalgic atmosphere.

It is also characterized by having four kinds of sources, among which the hot spring called "Ishino-yu, stone hot spring" is famous for being able to predict the weather of the next day by the color of hot spring. It's said that it will rain if the water is muddy blue, and if it's clear it will be fine weather.

Open all year round, even though it is in the outback. It may be interesting to reach the open-air bath by walking in the deep snow