Shiotani Onsen
- Location
- Shioya, Tochigi, Japan
- Water type
- sodium chloride
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Soothing — neither hot nor cold, perfect balance.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Shiotani Onsen is an iodine-bearing hot spring in Tochigi Prefecture, in the thermally rich zone of this northern Kanto prefecture whose abundant hot spring resources are centered on the famous Shiobara and Nasu resort clusters in the volcanic foothills north of the Kanto Plain. Tochigi Prefecture's hot spring heritage encompasses a remarkable variety of mineral spring types from the saline and sulfurous springs of Shiobara to the simple mineral waters of numerous smaller resorts, and the iodine-bearing waters of Shiotani Onsen add a distinctive mineral category to this diverse thermal landscape. Iodine-rich springs are traditionally associated in Japanese thermal culture with the well-being of the skin, making Shiotani Onsen a distinctive destination within the broader hot spring culture of this celebrated northern Kanto prefecture.