The deepest free-fall pit in the lower 48 United States, the Fantastic Pit features a staggering 586 feet (179m) drop - a ...

From a protected cove on Long Island, Dean’s Blue Hole—Earth’s deepest known underwater cave—plunges more than 600 feet into darkness. The entry to South Passage is decorated by ...

This makes TJBH the deepest known underwater sinkhole in the world ... They believe that the bottom might be an intricate network of caves and tunnels, potentially interconnected.

One of the most famous underwater caves in the world, the Blue Hole is a giant sinkhole located off the coast of Belize. The deep blue water, surrounded by coral reefs, creates a striking contrast ...

Deep within a cave that was once submerged underwater, researchers discovered two new ancient shark species that lived around 325 million years ago. The shark fossils had been preserved in what is ...

Take a deep breath and dive below the surface with cave-diving experts and scientists in the video above. Find out what it takes to plunge into the dark and mysterious world of underwater caves. Caves ...

The caves once existed above the water line, but were flooded when sea levels rose. Deep within these underwater caves are formations which can only be formed in dry caves - spectacular sculptural ...

Together with model Ciara Antowski and a team of safety experts, Haining has broken the Guinness Book of World Records for the deepest underwater ... as well as cave torches mounted to other ...