If you are a professional diver you should visit Cenote Angelita Mexico.

These amazing pictures were taken by Anatoly Beloshchin in the cave Cenote Angelita, Mexico. Here’s his description: “We are 30 meters deep, fresh water, then 60 meters deep – salty water and under me I see a river, island and fallen leaves… Actually, the river, which you can see, is a layer of hydrogen sulphide.”
It must be an unforgettable feeling once you’re there and see it with your own eyes.