For example, you could visit the Dark & Bright Cave. Begin traversing the limestone mountain, a naturally magnificent formation that leads to the jade-colored ocean. An enclosed lagoon surrounded by endless greenery welcomes you after a trek through a 100m long ocean cave; the only entrance to this area of the cave. The Dark Cave is pitch black, requiring a torch to be able to see the pathway. The Light Cave, on the other hand, is naturally lit, with daylight streaming through openings in the farthest end of the cave.