"“El Edén" is one of my favorite cenotes because it’s run by an accommodating family and has lots of rocky outcroppings where you can lounge in the warm sun after the freezing water leaves you covered in goose bumps. There’s plenty of room along the edges of the cenote, which looks like a huge swimming pool. Shrieks fill the air as daredevils attempt swan dives from a high jump-off point. Snorkelers and divers find plenty of tropical fish and eels.