Matsushiro Onsen
Nagano · 松代温泉
Chloride springBicarbonate springIron spring
The water here
Chloride spring 塩化物泉
Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.
Bicarbonate spring 炭酸水素塩泉
Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.
Iron spring 含鉄泉
Turns reddish brown as the iron meets air. The water is clear at the source.
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Japanese Wikipedia
Other towns in Nagano