Explorers Discover World's Deepest Known Underwater Cave in Czech Republic The Hranicka Abyss is at least 1,325 feet deep, and likely goes down further.

In torrential rain, the diver of the expedition, Vassilis, managed this year to make a dive in the dark and icy waters of ...

Montana is already home to the deepest cave in the continental U.S., 10 miles north of Bobsled Cave and also located in the Bob Marshall Wilderness, reaching a depth of 2,477 feet.

The renowned cave diver made history a little closer to home this time after smashing the record for Ireland’s deepest cave dive.