Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Ogawa Onsen Kyodo Yokujo, in Izu, Shizuoka Prefecture, stands out for its sulfurous thermal water heated to 55°C (131°F). An indoor bath, an outdoor rotenburo and a sauna are available on site.
Insider tip — A community bathing facility (kyodo yokujo) in the Ogawa area of Izu Peninsula — one of Japan's richest volcanic hot spring zones. Sulphurous waters at high temperature emerge from the peninsula's volcanic bedrock. Izu is renowned for its many public baths, and this community bath exemplifies the tradition.