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Stonehenge

AMESBURY, UNITED KINGDOM - JANUARY 09: Footsteps in the snow lead from the historic monument of Stonehenge on January 9 2010, in Wiltshire, England. The UNESCO world heritage site and one the UK's most popular tourist destinations has been closed due to the ice and snow on the approach paths and footways. Britain is continuing to be gripped by the Arctic weather and forecasters are predicting more snow in the next 24hrs and that the cold spell could last for at least another week. (Photo by Matt Cardy/Getty Images)

Mysterious Stonehenge

Stonehenge,

one of world's the most famous ancient landmarks, has been studied for

centuries. Now, new evidence provides insight into the construction of

the famous stone circle.