
おぉたむすねィく探検隊 (Autumn Snake Exploration Team) / CC BY-SA 2.5
Kumamoto · Kyushu
A remote hydrogen-sulfide hot spring on the western slope of Aso's central cones, centered on a single historic ryokan (Yamaguchiya) that has operated an open-air bath beside the cascading Kinryu Falls for over a century.
Usual hours — confirm with the official site for holidays + seasonal closures.
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Kumamoto