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For the first time in nearly half a century a new archeological dig was permitted inside the sacred circle at Stonehenge and Smithsonian Channel cameras were there to capture it every step of the way.  Watch Stonehenge Deciphered to see what was unearthed and  hear the startling new theories two scientists have set out to prove.
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American Henges
American Henges The most famous henge in the world is Stonehenge but American ingenuity has created some pretty spectacular henges right here in the USA.
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Slideshow: Stonehenge gives up some secrets
View the Slideshow See some of the bones unearthed at Stonehenge and what they might mean.

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Go behind the scenes on this history-making archeological dig and hear from the scientists about what they found and what they think it all means. Their analysis is now complete and the results suggest new reasons for what motivated people 5,000 years ago to undertake the momentous task of moving dozens of bluestones, weighing many tons, more than 200 miles to create Stonehenge.

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The Big Dig
Watch daily video updates from the scientists who oversaw the first dig inside the circle at Stonehenge in 44 years and read about the theories they're hoping to prove.