50 Underwater Discoveries That Shocked The World

The Great Blue Hole

The Great Blue Hole
U.S. Geological Survey/Wikimedia Commons

The Great Blue Hole is located off the coast of Belize; it is essentially a huge marine sinkhole located close to the middle of the Lighthouse Reef, which lies roughly 43 miles away from Belize City.

The Great Blue Hole is a circular attraction that is 318m wide, goes 124m deep, and covers a 70,650 square-meter surface area. The sea levels weren’t as high back when the hole was formed during quaternary glaciations; it was found that the hole was formed many thousands of years ago after scientists analyzed the hole’s stalactites.