Explore the serene beauty of Rangko Cave on Gusung Island, a hidden limestone gem with crystal-clear, blue waters perfect for a unique swimming experience. Beyond its modest entrance lies an enchanting world of naturally crafted ceilings adorned with stalactites and stalagmites. The saltwater pool, fed by ocean water through rock crevices, offers a tranquil and buoyant swimming escape. Rangko Cave is an unforgettable destination for those seeking peace and natural wonder.