oW5E9lxRro8h1q3nDEdMIXOso1 500 THE GREAT BLUE HOLE

I saw this over tumblr.  It is always great to find things unknown to you and learn something from it like the image above.

The Great Blue Hole, located near Ambergris Caye, 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, a World Heritage site.

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