Megalithic Mysteries: Test Your Stonehenge Smarts
Date: 22 June 2012 Time: 01:19 PM ET
Stonehenge is arguably one of the most famous megalithic monuments in the world. It's also one of the most mysterious, with its prehistoric concentric rings garnering plenty of speculation as to why and how they were constructed.
Find out how much you know about this mystical site.
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