Cathedral Cave CATHEDRAL CAVE, there is a tall and thin cave inside the mountain. According to the weather and wind conditions on that day, you can snorkel into the cave to visit. In other people's posts, you can see that the cave with a large space is as high as the church, maybe because of this, so it is called CATHEDRAL CAVE by the local people. The weather changed in the afternoon of our trip. The wind and waves around the island were so strong that the boats could not shake. So the captain cancelled the arrangement of snorkeling and could only take pictures at a distance.