Yachi Onsen: One of Japan’s Three Secret Onsen
Located around the middle between Suiren-numa Pond and Tsuta-numa Pond, Yachi Onsen (谷地温泉), which has a history of more than 400 years, is one of Japan’s Three Secret Onsen (日本三秘湯). The other two are the Iya Onsen (祖谷温泉) in Tokushima and Niseko Yakushi Onsen (ニセコ薬師温泉) in Hokkdaidō.
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