Oyama-cho Chomin Ikoi no Ie; Ashigara Onsen
Oyama, Shizuoka, Japan
- Location
- Oyama, Shizuoka, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Oyama-cho Chomin Ikoi no Ie; Ashigara Onsen is located in Oyama, Shizuoka Prefecture, in the Ashigara mountains. Its sodium-chloride water reaches 41°C. The bathhouse features an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Ashigara Onsen serves Oyama-cho at the foot of the historic Ashigara Pass — the mountain crossing that predates the Tokaido highway as the ancient route connecting the Kanto plain to the western provinces through the densely forested Fuji-Hakone volcanic zone. The Ashigara Pass was described in the earliest Japanese poetry anthologies as the boundary between the eastern wild provinces (Azuma) and the civilized imperial lands, and the cedar-forested mountain valleys of Oyama-cho preserve the atmosphere of this ancient frontier on the edge of the greater Tokyo metropolitan region.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.