" The Great Blue Hole, Belize " It was formed as a limestone cave system during the last glacial period when sea levels were much lower. As the ocean began to rise again, the caves flooded, and the roof collapsed.Believed to be the world’s largest feature of its kind, the Great Blue Hole is part of the larger Belize Barrier Reef Reserve System
Pictured: The hole that appears to be draining water from the Pacific
Belize is home to a similarly amazing ocean hole – called the Great Blue Hole (pictured). The spectacular submarine hole is almost 1,000 feet in diameter and over 300 feet deep and is, unsurprisingly, very popular with scuba divers
15 Majestic Underwater Sites You Need To Visit Before You Die
The Great Blue Hole is the most popular dive destination in Belize. This massive hole under the water is near the Lighthouse Reef and creates a perfect circle of deep blue water. The water is 407 feet deep. It's breathtaking.
Blue Hole in Santa Rosa, NM | Blue Hole appears in the midst of the desert like a great blue gem. ( Agua Negra Chiquita) Once known as Blue Lake, it is one of seven sister lakes connected underground by a vast system of water.