Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Kanayama Zawa Onsen, in Minami-Alps, Yamanashi Prefecture, uses bicarbonate water at 41°C. An indoor bath, open-air rotenburo and sauna are available.
Insider tip — Kanayama Zawa, the gold mountain stream spring, rises in Minami-Alps City at the foot of the Akaishi Range, home to Japan second, third, and fourth highest peaks. The pure bicarbonate water is fed by snowmelt from these 3000-metre giants, and the approach roads offer stunning views of peaks rarely seen by international visitors.