Tsubame Onsen Sodaki no Yu

A wild bath (noyu, 野湯) reached by a hiking trail from Tsubame Onsen village, tucked at the base of a waterfall on the slopes of Mount Myoko. The water is a milky white sulfur spring, and the route up passes outcroppings crusted with mineral deposits and the faint smell of sulfur, part of the appeal before you even arrive. The trail takes around an hour to an hour and a half, and the bath itself is mixed (konyoku, 混浴). Closed in winter.