Amihari Onsen Sennyo No Yu

A mixed open-air bath (konyoku, 混浴) reached by a short forest walk from the Amihari Onsen hotel, about ten minutes through the trees with a waterfall audible the whole way. The water is milky blue, and the bath sits right in front of the falls with no roof overhead. There are no showers; if the water gets too hot, the river is right there. Seasonal closure in winter.