The (SCCi) announced today the successful acquisition of Mill Hole Cave, along with 76 acres of surrounding land.

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' ...

There is nothing reassuring about a cave with a name like Hell Hole, and even less comfort in the fact that its doorway is now protected by a steel-and-concrete structure called the “Mailbox,” an ...

A new, record-breaking blue hole has been discovered in Chetumal Bay off the coast of Mexico’s Yucatán Peninsula, plunging deeper than any previously known blue hole on Earth. The Taam Ja’ Blue Hole, ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. "The Little Pit" image from NASA's Mars Reconnaissance ...