Nestled on the edge of the rainforest, cracked into the side of a hill, is the entrance to a large underground area. While outside lighting will make it through the descent into the natural atrium, all bets are off beyond that point as the only way of traversing the darkness is through torchlight. Otherwise, one might have difficulty navigating the vast tunnel system, damp with rainforest water and littered with bones of various ages and sizes, some of which look less animal-like than others. However, navigate these caves successfully, and you may find the light again, in the form of an exit into one of the island’s other areas.