Semikyo Onsen
- Location
- Ono, Fukui, 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.
Semikyo Onsen—the Cicada Gorge Spring—rises within a dramatic gorge whose walls amplify the summer songs of cicadas into a wall of sound that is one of the most intensely Japanese of all natural auditory experiences—a sound that haiku poets have used for centuries to evoke the paradox of overwhelming summer heat and the deepest mountain solitude. The sulfurous waters carry the volcanic intensity of a spring formed within the confined geology of a gorge, where tectonic forces that carved the canyon also drive mineral-rich thermal water to the surface with particular energy and concentration in a landscape of dramatic vertical relief. The combination of gorge dramatics, the cicada summer orchestra, and sulfurous volcanic water makes Semikyo an onsen of full sensory engagement in every dimension of the Japanese summer experience simultaneously.