
Photo: Bariston · CC BY-SA 4.0 · Wikimedia Commons
吉良温泉 is a hot spring town in Aichi, Japan. The water leaves the ground at 25°C, cool enough that the baths here are usually reheated. Officially the water is classed as chloride spring and radioactive spring.
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Contains trace radon that leaves the water quickly. Also called radium or radon springs.
Figures from the town's Japanese Wikipedia article.
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