
Photo: くろふね · CC BY 3.0 · Wikimedia Commons
柳津温泉 is a hot spring town in Fukushima, Japan. The water leaves the ground at 47°C, hot. Officially the water is classed as chloride spring. Its sources put out around 510 litres a minute.
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Figures from the town's Japanese Wikipedia article.
37.5316, 139.7245 — open the map
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