Ichi no Mata Onsen
- Location
- Yamaguchi, Yamaguchi, Japan
- Water type
- bicarbonate
- Temperature
- 38 °C
- pH
- 8
Water profile
Soothing — neither hot nor cold, perfect balance.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Ichi no Mata Onsen occupies a setting at the foot of Mount Ichii-ga-take — also known as Toyoda Fuji for its graceful resemblance to sacred Mount Fuji — in Toyota Town, Shimonoseki City, Yamaguchi Prefecture, at the southwestern tip of Honshu in the former Nagato Province. The spring flows with bicarbonate and simple thermal waters, their gentle alkaline chemistry softening the skin and easing tension, while the local toponym carefully distinguishes the spring name Ichi no Mata using a different character from the settlement name Ichi no Mata, a precision of nomenclature typical of Japan's meticulous onsen documentation tradition. Set amid the forested foothills of western Honshu near the Kanmon Strait, this spring offers visitors a quiet mountain retreat combining natural thermal bathing with the scenic grandeur of a landscape shaped by ancient volcanic and tectonic forces.