Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Roadside station Shihoro Onsen in Shiho-cho, Hokkaido, is a michi-no-eki (roadside station) on Hokkaido Prefectural Route 134 that underwent major renovation and reopened in April 2025, bringing updated thermal spring facilities to travelers crossing the vast Tokachi Plain—one of Hokkaido's most productive agricultural zones where the scale of open farmland, clear rivers, and distant volcanic peaks defines a northern landscape of exceptional spatial grandeur. The thermal spring at this station serves both local residents and highway travelers with the warming mineral waters that Hokkaido's volcanic geology provides even across the non-volcanic Tokachi Plain through deep geological formations. This station exemplifies the Japanese michi-no-eki tradition of pairing regional food and crafts with thermal bathing to create rest stops that are genuine community and cultural destinations rather than mere highway service facilities.
Insider tip — Roadside Station Shihoro Onsen sits on the vast agricultural plain of eastern Hokkaido, where dairy farms stretch to the horizon and the sky feels enormous. The saline thermal waters are characteristic of this deep sedimentary basin and are wonderfully warming after exploring the surrounding Tokachi plain in any season. The facility doubles as a local community hub where farmers and hikers mingle informally. Nearby Obihiro is famous for its butadon pork rice bowls, a fitting meal before or after a long soak.