Hirauchi Kaichu Onsen

Went to Hirauchi Kaichu Onsen on Yakushima. https://maps.app.goo.gl/jGcWiRrgzHsnj9pH7 Costs 300 yen, payment into a donation box. There are changing rooms for men and women. Three baths (one was being cleaned when I was there). Baths are mixed — konyoku, that is. It's customary to cover up with a small towel, but all the women were fully clothed when I was there and just soaking their feet. Clothed people in an onsen is a minus. Maybe I was just unlucky, but until an old man showed up and stripped down, even the local men were sitting clothed and glumly soaking their feet. Plus — no fences at all, there's a sea view and you can even take a dip in the ocean (watch out for sharp shells). Another minus for the anxious — tour guides do take photos from the changing rooms area without even crossing the payment boundary. Doesn't bother me, but fair warning. The water seems to be sulfuric, judging by the smell.