Cathedral Cave is a natural formation in the limestone cliffs of Cathedral Island. As with most places that island hopping tours visit in the area, you can snorkel and swim near the cave. But the main reason to stop at this tourist spot is to observe the natural formation and to do some sightseeing.
The popular Tour B used to include this destination in its itinerary. But since the discontinuation of this circuit, it is included in the 7 Wonders of El Nido tour called Cave Exploration Tour. In addition to this destination, this tour will also take you to Cudugnon Cave and Snake Island, another popular site in El Nido.