3 Facilities
A vast garden bath hall fed by 14 sources at 1,400 litres a minute, with four water types — sulfur, alum, saline and iron — in one place. The central pool is mixed-gender (women-only hours; bathing garments allowed).
About 5 minutes by car from Kirishima Shrine, a rare inn with a natural mud bath. Scoop the grey mineral mud from the milky sulfur pool and use it as a body mask in the open-air bath. Day use 11 am–8 pm, ¥900 — the classic stop after the shrine.
A large resort hotel in Maruo, in the Kirishima spa group, taking day bathers from 11:00 to 15:00 with last entry at 14:00. The fee is 1,200 yen for adults, 600 yen for elementary pupils and 300 yen for children aged 3 and over (tax included). Milky, turbid water is its hallmark, and there are many tubs: the main hall Onami-no-yu, the open-air Kiri-no-yu, a hinoki steam bath, a natural onsen steam bath and a cold plunge. Each bath has a scheduled cleaning day set by weekday and by odd or even date, so some are unavailable. The hotel may close over New Year, Golden Week, Obon and public holidays, so calling ahead is advised. It stands just off the Maruo crossing on Route 223, with free parking.