
Photo: Simasakon · CC BY-SA 3.0 · Wikimedia Commons
Manganji Onsen is a hot spring town in Kumamoto, Japan. The water leaves the ground at 44°C, hot. Officially the water is classed as simple spring.
Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.
Figures from the town's Japanese Wikipedia article.
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.