Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Yashiki Onsen Shuseikan is also located in Sakae, Nagano. Its sulfurous water, with a pH of 6.5, rises at 41°C, split between an indoor bath and a rotenburo, complemented by a sauna.
Insider tip — Shuseikan, the gathering hall for excellence, is a community facility in remote Sakae-mura where heavy snowfall isolates the village for months each winter. The sulfurous spring and communal baths play a vital social role in keeping this resilient mountain community connected.