Alien world on planet Earth

From Fortuna: "These amazing pictures were taken by Anatoly Beloshchin in the cave Cenote Angelita in 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.'" 

[via Milena]