Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Yamagata Uwano Onsen Tenjin no Yu, in the city of Yamagata, has iron-rich water with a pH of 6.3, at 40°C. An indoor bath, an open-air outdoor bath and a sauna are on site.
Insider tip — Yamagata Uwano Onsen Tenjin no Yu draws iron-rich mineral waters in the western foothills of Yamagata city, a region blessed with abundant hot spring resources from the active volcanic arc of the Tohoku spine. The amber waters bear the ferrous richness characteristic of Yamagata's inland springs and are especially warming during the city's cold, snowy winters. The name Tenjin no Yu evokes the divine quality of the water, a fitting tribute in a region whose bathing culture stretches back a thousand years. Pairing a visit with Yamagata's famous imoni stew season makes for an ideal autumn experience.