Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Kai Oizumi Onsen Panorama no Yu, in Hokuto, Yamanashi, takes its name from the surrounding mountain views. Bicarbonate water, pH 8, reaches 41°C, feeding an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Panorama no Yu delivers on its name with elevated outdoor baths overlooking the entire Kofu basin where the Yatsugatake, Minami Alps, and Fuji ranges form a complete 360-degree volcanic panorama. Oizumi is at the highland edge of Hokuto where the air is noticeably cooler than the basin floor below.