Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Tenno Onsen Kurara, in the city of Katagami, Akita Prefecture, taps sodium-chloride thermal water at 40°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Katagami lies on the coastal lowlands of Akita Prefecture near the former Hachirogata Lagoon — once Japan's second-largest lake, partially reclaimed in the 1950s-70s to create agricultural polders, leaving a smaller lake and surrounding wetlands that are now an important bird sanctuary. The coastal plain stretches between the Sea of Japan and the Dewa mountains, and the area's rice paddies produce Akita Komachi — one of Japan's most prized rice varieties. Kurara onsen's transparent waters reflect this clear northern landscape.