They knew how long they would be underwater so they could safely decompress, the perfect mixture of gas to use in their tanks, and accounted for the intense pressure their bodies would face as they ...

Bushman’s Hole in South Africa is one of the deepest freshwater caves in the world, but it has also become infamous for ...

The Hranicka Abyss is at least 1,325 feet deep, and likely goes down further. — -- A team of explorers believe they have discovered the deepest known underwater cavern the world in eastern Czech ...

Every day, crowds flock to the Lukács Thermal Baths in Budapest, soaking in warm mineral-rich pools as yellow trams clatter along Frankel Leó Street. Most never suspect that just yards away, beneath ...