Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Yunodai Onsen Tsurusenso is located in Nikaho, Akita Prefecture. Its sodium-chloride water is heated to 41°C and feeds an indoor bath as well as an outdoor rotenburo, with a sauna.
Insider tip — Nikaho in southern Akita overlooks the Sea of Japan and is known for Chokai-san, an active stratovolcano also called the Dewa Fuji. Yunodai Onsen sits above the coast — the crane-senso name honours the cranes of the Akita wetlands.