This secluded onsen is found inside Joshin-Etsu Plateau National Park. Surrounded in plenty of natural greenery, the hot spring boasts a guest house that has been designated a National Tangible Cultural Property.
Its famous public bath has been around for over a century. This wooden bath gets its water from the cracks in the bedrock beneath that naturally expel hot spring water.
- 650 Nagai, Minakami-machi, Tone-gun, Gunma
- Mapcode: 554 250 810*01
- ・ About 35 minutes by car from the Kan-Etsu Expressway Tsukiyono IC
・ Take the Kan-etsu Kotsu Bus from Platform 3 at the Jomo-Kogen Station on JR Joetsu Shinkansen headed for Sarugakyo for about 35 minutes. Get off at Sarugakyo. Transfer the Minakami Town Bus at Sarugakyo headed for Hoshi for about 15 minutes. Get off at Hoshi.
- ▼Water quality: Calcium, sodium-sulfate spring
- Final day of update: April 3, 2020