湯の小屋温泉
Gunma
Simple springSulfate spring
The water here
Simple spring 単純温泉
Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.
Sulfate spring 硫酸塩泉
Clear water with a faintly bitter taste. Known for holding heat.
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Japanese Wikipedia
Other towns in Gunma