After descending nearly 500 feet through vertical drops, freezing waterfalls, and narrow passages, the team reached what they ...

Mexico's Taam Ja' Blue Hole is the deepest known underwater sinkhole in the world, researchers have discovered — and they haven't even reached the bottom yet. New measurements indicate the Taam Ja' ...

A gated cave system led explorers deep underground to a blue hole connected to flowing water and an underground aquifer. Warning tape, restricted passages, and extreme depth suggested this was not an ...

In the South China Sea, near the Paracel Islands, the aqua-colored waters of an expansive shallow reef platform suddenly ...

Researchers have found a blue hole they say is the deepest in the world—and they’ve yet to find where it bottoms out. The formation is the Taam Ja’ Blue Hole in Mexico’s Chetumal Bay, and it has so ...

Twenty years ago, a cave diver found thousands of fossils in a blue hole on Great Abaco Island. The fossils reveal the island's Ice Age history, with pristine specimens of now-extinct species.

They were rolling in the deep. Scientists have identified what could potentially be the “deepest known blue hole” in the world, extending so far down that the bottom has not yet been reached.

Divers have finally made it to the bottom of Belize’s iconic Great Blue Hole, but a dirty secret was lurking at the bottom of the pristine natural wonder. The Great Blue Hole is a giant marine ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Sinkholes are natural depressions that form when rock ...

GUADALUPE COUNTY, N.M. (KRQE) – The City of Santa Rosa says they’re closing Blue Hole for maintenance. The closure is scheduled to last two days, from Monday, April 15 through Tuesday, April 16.

From China's Heavenly Pit, which stretches down 2,172 feet, to the Devil's Sinkhole in Texas that is home to three million bats — here are some of the world's deepest known sinkholes. When you ...