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 ...

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 ...

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 ...

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 ...

Plunge into this deep blue hole and you'll discover imposing ancient stalactites (calcium deposits resembling icicles) and coral fringe. Declared a UNESCO World Heritage Site in 1996 – along with six ...

The Belize Barrier Reef is 10,000 years old, and it’s the second-largest barrier reef in the world and the longest barrier reef system in the Northern Hemisphere. It extends the full length of the ...

Belize's Lighthouse Reef contains something of an anomaly: After all, when we see sinkholes on the news, they're usually disastrous and frightening, swallowing up Australian campgrounds and Florida ...

The Great Blue Hole in Belize is a massive ... hole that’s roughly 300m in diameter and over 120m deep, said to be formed during the Ice Age. The travel group with tour guide Roberto (right) at ...