Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Utoro Onsen; Yuhidai no Yu is located in Utoro, Shari town, on the island of Hokkaido. The sodium-chloride water emerges at 43°C. An indoor bath, an outdoor rotenburo and a sauna round out the facility.
Insider tip — At the gateway to UNESCO Shiretoko World Heritage wilderness, Yuhidai no Yu earns its name (Evening Glow Terrace) with extraordinary sunsets flaming across the Sea of Okhotsk; in winter, drift ice floating in from Russia makes this clifftop onsen one of Japan's most otherworldly bathing experiences.