Kumanoyu Onsen
Nagano · 熊の湯温泉
Bicarbonate springSulfate springSulfur spring
The water here
Bicarbonate spring 炭酸水素塩泉
Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.
Sulfate spring 硫酸塩泉
Clear water with a faintly bitter taste. Known for holding heat.
Sulfur spring 硫黄泉
The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.
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Japanese Wikipedia
Other towns in Nagano