Points of interest: The Cathedral is a very big open air cave with an underwater entrance at 3 meters deep. Inside there is several chambers with 2 beaches and on the roof we can observe stalactites. Thanks to an air entrance, the cave is the home of a bats colony and also swallows so we have to keep quiet to not disturbe them. It is an easy dive but really breath holding sensation (here you can, you are not underwater!!). Max depth: 20 meters