Himekawa Onsen; Kasa no Yu
Otari, Nagano, Japan
- Location
- Otari, Nagano, Japan
- Water type
- bicarbonate
- Temperature
- 42 °C
- pH
- 8
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Himekawa Onsen, known as Kasa no Yu, sits along the Hime River in Otari, Nagano prefecture. Its bicarbonate water, alkaline at pH 8, flows at 42°C into an indoor bath, an outdoor rotenburo and a sauna, amid the Japanese Alps.
Insider tip — Kasa no Yu, the umbrella spring, flows beside the Himekawa Princess River in Otari-mura at the foot of the Northern Alps near Hakuba. The valley contains some of Japan most ancient geological formations — Himekawa jade was traded across prehistoric Japan 5000 years ago and continues to be found in mountain stream beds today.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 42 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.