There Must be Thousands of Caves on the Ryukyu Islands
Two years ago, Map It Okinawa and I followed the sign to the site.
Fortunately, I took a few photos, before leaving the island and saved them.
There are many stories of people from China, being shipwrecked and surviving in caves.
The Ryukyu Islands (Okinawa) were a major part of trade routes in the days of sailing ships.