Located in the Yucatan Peninsula in Mexico, there's a secret underwater river called Cenote Angelita (Spanish for Little Angel).
Submerged in deep water, one of the last things a diver may expect to find 90ft below the surface is a river view. But that's exactly what awaits those bold enough to dive in Mexico's Cenote Angelita. The eerie landscape of swirling mist looks like a flowing river in the middle of the cave, complete with trees emerging from the surface.
The swirling mist of the 'river' is actually a cloud of the gas hydrogen sulfide created by the mix of fresh and saltwater.
The phenomenon can only be seen in person by extremely skilled scuba divers who can cope with exploring the depths of the 180ft pit. For those who aren't, photographer Anatoly Beloshchin filmed his exploration of the cenote - a cave created by the collapse of limestone bedrock which then fills with water - to show the drama of the moment the river comes into sight.