Arifuku Onsen
- Location
- Hamada, Shimane, Japan
- Water type
- bicarbonate, radioactive, carbonated
- Temperature
- 40 °C
- pH
- 6.3
Water profile
Relaxing — deep, immediate muscle release.
Rich in active gases or metals — a strong mineral character.
Mineralised water — eases movement and joints.
Arifuku Onsen in Shimane Prefecture is distinguished by a rare and remarkable triple mineral profile combining bicarbonate, mildly radioactive, and carbonated thermal waters in a single spring, bringing together the skin-conditioning alkalinity of carbonate chemistry, the tonic radon-bearing radioactivity associated with immune stimulation in traditional Japanese balneology, and the effervescent tingling of dissolved carbon dioxide in an unusually complex geothermal water. Shimane Prefecture's position on the Japan Sea coast, where ancient geological formations and volcanic influences intersect in a landscape of cultural and natural depth, produces thermal springs of exceptional variety, and Arifuku Onsen stands among the most mineralogically distinctive of the prefecture's geothermal resources. The spring's extraordinary triple mineral character makes it a destination of particular interest for devoted onsen enthusiasts who seek the full scientific and sensory breadth of Japan's geothermal mineral heritage within a single, contemplative bathing experience.