Kurokawa Onsen is known for its rotemburo (outdoor baths) but if you're ready for something a little bit different, try out the cave onsen of Ryokan Shinmeikan. Passageways carved out of the rock reach back far into the hill; the water in some spots can be as deep as one's waist. The steamy air makes for poor visibilty so caution is needed when moving around the onsen but this is an incredibly unique experience. There are three separate bathing areas, one for women only and two that are mixed gender.
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Cave Onsen of Shinmeikan
A steamy subterranean soak in Kurokawa Onsen
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By Mandy Bartok
Community writer

The riverside pathway to Shinmeikan's cave onsen

The entrance to the women's bath looks just like a mine shaft

The cave extends fairly far back into the hill and there are several side tunnels

A small statue stands at the entrance to the baths

The entrance to Shinmeikan is across the bridge

A line of sandals on the bridge to Shinmeikan
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Information
Kurokawa Onsen, Minamiogunimachi, Aso-gun, Minamioguni-machi Kumamoto Prefecture 869-2400 (Directions)
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Anonymous
10 years ago
Interesting place for onsen!
It's very unique but you have to be careful, as it's not very well-lit!
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