The Okinawa Cave, also known as Gyokusendo Cave, is an impressive natural wonder located on the island of Okinawa, Japan. As the largest karst cave on the island, it serves as the central attraction of the popular Okinawa World theme park. This place is striking for its scale and unique underground beauty, attracting both researchers and tourists alike.

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The length of Gyokusendo Cave is about 5,000 meters, but an 890-meter section is equipped for tourist excursions. Inside, visitors are met with a breathtaking sight: numerous stalactites and stalagmites, formed over hundreds of thousands of years, create whimsical and almost fairy-tale formations. Crystal-clear lakes and quietly flowing underground rivers add a special charm to this subterranean world.
The history of Gyokusendo Cave spans approximately 300,000 years, making it not only a place of stunning beauty but also a significant geological site. A constant temperature of around 21°C is maintained inside the cave year-round, providing comfortable conditions for a visit at any time. A tour of the Okinawa Cave is a wonderful opportunity to learn about the island's natural history and its unique geological features hidden deep underground.