
Togura-Kamiyamada Onsen is a hot spring town in Nagano, Japan. Officially the water is classed as sulfur spring. Its sources put out around 8,332 litres a minute. 50 inns take visitors here.
The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.
Figures from the town's Japanese Wikipedia article.
36.4809, 138.1427 — open the map
Planning a first soak? Read how an onsen stay works, and what to do if you have tattoos.