Kaimon hot spring

488. Kaimon hot spring, Oita An old-school onsen for 350 in the middle of nowhere. Operating hours 15:00 to 20:00 (closed Wed and Thu). A very lively and friendly grandma was working there. They stamp the 88 Kyushu Onsens passport. Indoor bath with cloudy brown-white water, iron smell. Temperature around 40 degrees. Breathing inside is good. 05.04.2025