Surrounded by the sea of coral reefs and subtropical islands, Okinawa has more than 600 solutional cave sites.
The largest limestone cave is Gyokusendo Cave. Created over 300,000 years, Gyokusendo Cave is one of the largest in Japan with a total length of 5,000 meters and over 1 million Speleothems. (Open to the public is 890 m)
In the modern age of civilization, every place on earth seems to have become a daily space for mankind, but the extraordinary space is spreading in our feet, the underground world. Various underground rivers flowing through Speleothem and caves, the sound of dripping water. Please experience the underground time that has been going on for tens of thousands of years and now.
Attractions


Caves that are out of reach of the sun are inhabited by creatures adapted to the dark environment. In Gyokusendo Cave, there are many rare species unique to subtropical islands, such as the Okinawa least horseshoe bat, the eyeless Harvestman and Kuroiwa's ground gecko, the largest freshwater shrimp in the country, and the Giant mottled eel that grows over 1.5m.
You can see a variety of Speleothem, such as the Stalactites hanging from the ceiling, the Stalagmites stretching from the ground like bamboo shoots, the Microgours that grows into the flow of groundwater, and the Cave pearls that grows with sand grains.
"Cave rafts" is a rare Speleothem that can be seen only seasonally.
"Okinawa Cave Week 2021" was held for eight days from November 21 to 28, 2021, with the aim of making citizens familiar with the nature and culture of the caves and karst areas of Okinawa. At two venues, Okinawa World and the Okinawa Prefectural Museum & Art Museum, there were many events that were too deep by cave specialists.