893. Kaminoguchi Onsen, Beppu A traditional onsen, members only. It was open to the public during the onsen festival in Beppu as part of the onsen marathon from 09:00 to 16:00. No staff, no soap, and no shower. During the festival, they stamp the Beppu Onsen-Do stamp. The water is clear, and the temperature is 39.5. It is easy to breathe inside. 03.04.2026
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