Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Hakariishi Onsen Center is located in Ashikita, Kumamoto Prefecture. Its sodium-chloride water reaches 41°C, served in an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Hakariishi Onsen, the weighing stone spring, serves Ashikita-cho facing the Yatsushiro Sea (Shiranui Sea), famous for the mysterious Shiranui fire phenomenon where bioluminescent lights appear on the dark water surface on midsummer nights near Misumi. The weighing stone name recalls the traditional measurement standards maintained at coastal road checkpoints on the old Kyushu sea road that connected Nagasaki and Kagoshima through these sheltered inner waters.