Description
Jomon Tennen Onsen Shiraku no Yu is a day hot-spring bath in Tsukagoshi, Saiwai ward, near JR Yako Station, built on a former factory site around strong, hypertonic sodium chloride water from over 1,300 m down. Rock-lined outdoor baths use andesite and natural timber, and there is a miso-barrel bath. Men have a natural-wood dry sauna; women have a mist sauna styled as a sea cave. Open daily 10:00–24:00; adults ¥1,170 weekdays and ¥1,400 at weekends. Under-fives and tattoos are not admitted.