Destination
Japan
Best time to visit Kusatsu Onsen: Dec–Mar. Japan's most acidic major spring, so hot it is cooled by hand with wooden paddles in a performance called…
Aim for Dec–Mar, the 4 months that line up best.
The best time to visit Kusatsu Onsen is Dec–Mar, in Japan.
Kusatsu Onsen is in Japan.
Japan's most acidic major spring, so hot it is cooled by hand with wooden paddles in a performance called yumomi.
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