Oku-yagen Hot Spring
- Location
- Ōhatamachi, Japan
- Water type
- bicarbonate
- Temperature
- 35 °C
- pH
- 7.2
Water profile
Soothing — neither hot nor cold, perfect balance.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Oku-Yagen Onsen is the innermost and most remote of the Yagen Onsen cluster in Mutsu City, Aomori Prefecture, at the far tip of the Shimokita Peninsula, reached by a narrow mountain road through pristine beech forests along a wild river gorge. The bicarbonate spring waters have a silky, skin-smoothing quality treasured in local onsen culture, and the rotenburo riverside outdoor baths place bathers in direct communion with the rushing river and ancient forest canopy above. The profound remoteness and ecological integrity of Oku-Yagen make it a pilgrimage destination for those who seek Japan's hot springs in their most elemental and unmediated form.