Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Tennen no Yu (Gohoku Musasabi Onsen) is found in Ino, Kochi Prefecture. Its sodium-chloride water reaches 41°C; an indoor bath, an outdoor rotenburo and a sauna are on offer.
Insider tip — Musasabi Onsen, the flying squirrel spring, celebrates the giant Japanese flying squirrel that inhabits the old-growth cedar forests of the Niyodo River valley above Ino Town. Ino is the historic centre of Tosa washi handmade paper production, practiced since the 8th century using the extraordinarily clear Niyodo River water — the same river whose brilliant blue-green transparency has made it one of Japan most photographed waterways.