Just a short boat ride from Tiktikan Lagoon are three caves open for exploration. The popular Crystal Cave and Bolitas Cave are easy and accessible which are often visited by tourist. The third cave, Tundan Cave sees less visitors as it is longer and requires an extra fee for exploration. Since I have only limited time to explore I picked what the guides considered the best among them, Tundan Cave. It may be more than half a kilometer long but the cave formations are remarkable.