Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Kiraku Onsen, in Kirishima, Kagoshima prefecture, heats its sulfurous water with a pH of 6.5 up to 44°C. An indoor bath, an outdoor rotenburo bath and a sauna are available on site.
Insider tip — Kiraku, meaning comfortable and free of worry, captures the spirit of the Kirishima volcanic highland where Japan imperial mythology was born and where gods are said to have descended. The powerful sulfurous spring warms hikers after climbing the active crater peaks of the Kirishima chain above clouds and azalea fields.