Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Kunimidaira Onsen / Hagoromo no Yu, located in Ōshū, Iwate Prefecture, taps sodium-chloride water at 42°C. The facility includes an indoor bath, an outdoor rotenburo, and a sauna.
Insider tip — Hagoromo no Yu, the feather robe hot spring, evokes the celestial tennyo maiden of Japanese legend who lost her feather robe and could not return to heaven while bathing in a mountain pool. Kunimidaira Plateau above Ōshū overlooks the Isawa valley where the golden Konjikido chapel of Chuson-ji Temple, a UNESCO World Heritage masterwork of the Heian Fujiwara lords, glitters among the sugi cedar forest below.