10 Geological Wonders you didn’t know existed

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10 Geological Wonders you didn’t know existed

some pretty cool stuff

http://208.106.228.199/_media/imgs/articles/a391_hole.jpg

Part of the Lighthouse Reef System, The Great Blue Hole lies approximately 60 miles off the mainland out of Belize City. A large, almost perfectly circular hole approximately one quarter of a mile (0.4 km) across, it’s one of the most astounding dive sites to be found anywhere on earth. Inside this hole, the water is 480 feet (145 m) deep and it is the depth of water which gives the deep blue color that causes such structures throughout the world to be known as "blue holes."

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@djjd62,

Door to Hell - like that one

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@TTH,

This was on the Science Channel or Discovery recently but I forgot the name of the documentary. It was shot in HD.

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I knew about 4 of them, I watch nature shows. There's a spot along the mid-atlantic area (coal country) where the ground beneath a town/area has been smoldering.

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@djjd62,

Thought the Giant's Causeway might make it (it did - no.7). A friend of mine from that part of Ireland once told me of a multiple-choice geography exam in which the following question was posed: "How was the Giant's Causeway formed?" One of his class-mates picked "By giants".

10 Geological Wonders you didn’t know existed

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