Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Dorogawa Onsen Center, in Tenkawa, Nara Prefecture, uses bicarbonate water at 40°C. An indoor bath, open-air rotenburo and sauna are available.
Insider tip — Dorogawa Onsen Center sits at the foot of Mount Omine, the most sacred peak of Shugendo mountain asceticism where yamabushi monks have practiced fire walking and waterfall meditation since the 7th century in a UNESCO World Heritage landscape. Dorogawa is the last settlement before the gender boundary on the sacred mountain — women are still traditionally excluded from the upper Omine ascetic routes — making this spa village both a gateway to sacred wilderness and a place of ancient spiritual encounter.