Kamasaki Onsen
- Location
- Shiroishi, Miyagi, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Kamasaki Onsen—Cauldron Cape Spring—takes its name from a dramatic coastal or highland topographic feature whose combination of the cauldron (kama, suggesting volcanic geological activity) and the cape (saki, a projecting point of land) creates a name of forceful geological imagery for this saline thermal spring in Miyagi Prefecture. Saline mineral waters carry the sodium chloride character of Miyagi's geological formations, providing the deeply warming, heat-retaining mineral soak that makes salt springs among the most physiologically effective for sustained body warmth—a quality particularly valued in Miyagi's cold Tohoku winters. The cauldron cape name evokes the volcanic energy of geological activity at a prominent landscape feature, framing this saline Miyagi spring as a spring whose mineral richness emerges from the forceful geological activity implied by the cauldron imagery of the spring's dramatic name.