Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Yoshimatsu Onsen Tsutsuha no Yu, in Yusui, Kagoshima Prefecture, offers sodium-chloride thermal water at 39°C, an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — 'Tsutsuha no Yu' (つつは — bamboo pipe waters) at Yoshimatsu Onsen in Yusui-cho. The 'bamboo pipe' name references the traditional Japanese method of channelling hot spring water through hollowed bamboo or wooden conduits from spring to bath — a technology unchanged since the Edo period. Yoshimatsu (吉松) is a former town in Yusui at the junction of three railway lines — one of Kyushu's most scenic rail crossings, serving the Kirishima, Hitoyoshi, and Kagoshima lines through volcanic highland country.