Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
In Kirishima, Kagoshima Prefecture, a volcanic region in southern Japan, Kagoshima Kuko Tennen Onsen Ashiyu Oyattosa offers sulfurous water with a slightly acidic pH of 6.5. An indoor bath, outdoor bath and sauna round out the facilities.
Insider tip — Kagoshima Kuko Tennen Onsen Ashiyu Oyattosa is a footbath (足湯, ashiyu) with naturally thermal water at Kagoshima Airport, built on the slopes of the Kirishima volcano. Enjoying a free ashiyu while waiting for your flight is a quintessentially Japanese experience — a welcome gift in the volcanic archipelago of Kyushu.