Okinawa World and Gyokusendo Cave おきなわワールド・玉泉洞

Gyokusendo Cave is a large natural cave located in the south of Okinawa Island. It is the second longest cave in Japan, with a total length of five kilometers. Visitors can explore 850 meters of the cave, which features stalactites and stalagmites, along well-maintained and lit paths.

Source: japan-guide.com ↗, read 2026-09-11