Back to 10 Bizarre Natural Wonders
Great Blue Hole, Belize
U.S. Geological Survey16/06/12
This large submarine sinkhole resides in the Lighthouse Reef ecosystem. It measures 984 feet across and 394 feet deep, and is believed to be the world's largest sinkhole. Moreover, the Great Blue Hole is considered one of the best places to scuba dive in the world.