Mystery of Stonehenge
Archaeologists have unearthed new clues to why Stonehenge was built.
Solving the Mysteries of Stonehenge
Archaeologist Julian Thomas of the University of Manchester in England, digs at the site of the Stonehenge Cursus, a cigar-shaped ditched enclosure at Stonehenge. The original purpose of the enclosure, which stretches nearly 2 miles, is unknown. (©2008 Andrew Henderson/National Geographic)
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