
Photo: 妖精書士 · CC BY-SA 3.0 · Wikimedia Commons
百観音温泉 is a hot spring town in Saitama, Japan. The water leaves the ground at 57.3°C, hot. It measures pH 7.55 — mildly alkaline, the slippery kind. Officially the water is classed as chloride spring and iodine spring. Its sources put out around 2,250 litres a minute.
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Contains iodine and often turns yellowish over time. Uncommon.
Figures from the town's Japanese Wikipedia article.
36.0915, 139.6769 — open the map
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