The Great Blue Hole:

Visible from outer space, more than 1000 ft in diameter and 412 ft deep, the Great Blue Hole is a breathtakingly grandiose sinkhole located 43 miles off the coast of Belize, known as a diver's mecca.

 

 



• What It Is:

The Great Blue Hole is a vertical cave, or sinkhole, in the water.

• Where It Is:

The hole is located off the coast of Belize in Central America. It’s part of the Lighthouse Reef System.

• When It Formed:

The cave system began forming 153,000 years ago, when sea levels were much lower. When the waters began to rise, the caves were flooded.

• What It Looks Like: The circular limestone hole is almost 1,000 feet across and about 400 feet deep.