The lake was formed when the Yugawa was dammed up by the eruption of Mt. Mitake. The lakeside is about 3km in circumference, and you can walk around it in about an hour. There is an observation deck with a view of Mount Nantai, and you can also observe the hot springs gushing out from the grounds, making this a spot you'll want to explore many times during your stay. *The observation deck is closed in winter due to snow accumulation.
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Last Update ：
2025.11.30
National Recreation Hot Spring Area Council
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