
Photo: 運動会プロテインパワー · CC BY-SA 4.0 · Wikimedia Commons
日野温泉 is a hot spring town in Yamaguchi, Japan. The water leaves the ground at 18.2°C, cool enough that the baths here are usually reheated. It measures pH 8.34 — mildly alkaline, the slippery kind. Officially the water is classed as bicarbonate spring.
Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.
Figures from the town's Japanese Wikipedia article.
34.1759, 131.0709 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.