Gyokusendo Cave in Okinawa is a hidden gem waiting to be explored underground. With its stunning rock formations, crystal-clear pools of water, and mysterious cave fish, it offers a cool escape from the sun-soaked beaches above. Visitors can stroll along a steel walkway, marvel at the stalactites and stalagmites, and even join special tours in September for a more adventurous experience. Don't miss out on this exotic world of water and stone beneath the surface of paradise!