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 ...

I'm a severe claustrophobe. After getting trapped in a slide in my local McDonald's at five years old, I swore off all tight and dark spaces forever. So it's not entirely surprising that I couldn't ...

The idea of disappearing into some of the world’s deepest pockets submerged in pitch black water, with only the sound of ...

Looking for an adventure that’s cool (literally) and completely out of the ordinary? The United States is home to some of the world’s most fascinating cave systems, each with its own story carved by ...

He was involved in one of the most famous rescue missions the world has ever seen. Now, almost seven years on, Jim Warny — who formed part of the team that saved the lives of 12 boys and their ...