Jigoku Hot Springs, Seifūsō inn (地獄温泉 青風荘) 地獄温泉 青風荘
The water gushes from under your feet and you go in clothed: 2,000 yen, until 17:00.
Seifūsō is an inn with hot-spring baths in the area of Jigoku (地獄, ‘hell’), in the village of Minami-Aso, with a main building and an annexe for overnight guests. The official website describes the Suzume-no-yu bath as fed by a spring that emerges at between 41.3 and 47.1 °C, of the simple acidic sulphurous type (単純酸性硫黄温泉, with hydrogen sulphide), with no added water. Moto-no-yu and Tamago-no-yu use a mixture of the Tamago-jigoku and Moto-jigoku springs at 66.8 °C, simple acidic. After 17:00 the baths are reserved for guests staying overnight.
Kumamoto