These amazing pictures were taken by the professional diver Anatoly Beloshchin in the cave Cenote Angelita, Mexico. Heres 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 youre there and see it with your own eyes.