Osorezan Onsen
- Location
- Mutsu, Aomori Prefecture, Japan
- Water type
- sulfurous
- Temperature
- 44 °C
- pH
- 6.5
Water profile
Relaxing — deep, immediate muscle release.
Rich in active gases or metals — a strong mineral character.
Soft water — natural, classic buoyancy.
Osorezan Onsen is a remarkable hot spring located near the sacred Mount Osore in Mutsu, Aomori Prefecture, one of the most spiritually significant sites in Japan. Mount Osore — whose name means 'dread' — is a volcanic landscape of sulfurous vents and sacred halls associated with the spirits of the dead in Japanese Buddhist tradition, and the adjacent hot spring baths are part of this ancient spiritual complex. The siliceous thermal waters, stark volcanic scenery of yellow sulfur deposits and barren rock, and the profound religious atmosphere create a bathing experience that is unique in the world. Visitors soak in basic but authentic facilities while surrounded by one of Japan's most hauntingly beautiful and spiritually charged natural landscapes.