In September 2023, I stopped by the hot springs for a day trip after staying near Lake Kussharo.
The hot springs at Kangsanseong Fortress were very special, and I stayed there this April to go to Lake Kussharo and Lake Mashu.
As expected, the hot spring water was good and effective for back pain.
The facility was old but cleanly maintained, and it seemed like elderly mothers were coming in groups.
Breakfast doesn't have a lot of variety, but it's worth a meal.
You can drink free sake in the lobby, so you can have a drink ^^
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