Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Bijoyu Onsen, in Kozagawa, Wakayama Prefecture, heats sodium-chloride water to 41°C, with an indoor bath, an outdoor bath (rotenburo) and a sauna available to bathers.
Insider tip — Bijoyu Onsen, the beautiful-woman spring, serves Kozagawa-cho where the ancient Kozagawa River — one of Japan last unpolluted primary rivers — flows through wilderness subtropical forest, rare cycad groves, and limestone karst gorges to the Pacific coast. Kozagawa-cho is the site of Japan most southerly wild cycad (sotetsu) habitat, where Cycas revoluta palms grow on limestone canyon walls in a botanical community unchanged since the Tertiary period — a living relic of the subtropical forest that covered southern Japan before the ice ages.