Like a pinprick piercing the azure Caribbean Sea, the Great Blue Hole is as mysterious as it is mesmerizing. From above, this almost perfectly circular underwater sinkhole is a deep, dark bullseye ...

Sediment cores from around the Yucatán Peninsula support a theory as to what could have led to the Mayans’ demise. This is the Great Blue Hole—a giant sinkhole located 40 miles off the coast of Belize ...

Did you know the Great Blue Hole in Belize is huge? It’s 318 meters (1,043 feet) wide and goes down 124 meters (407 feet). This amazing hole is part of the Belize Barrier Reef, a UNESCO site. It has ...

There’s a spot in the ocean that looks like a portal to another world. The Great Blue Hole, about 43 miles off the mainland of Belize, is a giant sinkhole near the center of Lighthouse Reef. The ...

Located about three hours by boat off Ambergris Caye, the Great Blue Hole is a ring of coral encircling a huge underwater sinkhole. It’s home to colorful fish, shrimp, groupers, black tip and reef ...

A team of scientists – including Virgin billionaire Richard Branson – has returned from a groundbreaking mission to the bottom of Belize’s Great Blue Hole with exciting findings. The Great Blue Hole ...

Blue holes are worldwide attractions for amateur and professional divers alike. Here are the world's five best blue holes. Snorklers swimming over Dean´s Blue Hole with a depth of 202 meters on June ...