A few days ago, you read about Clonehenges, art installations that are made to resemble the original Stonehenge. You might not realize that Stonehenge is far from the only ancient stone circle in the UK, and there are some in Europe and North America as well. WebEcoist looks at 13 of these circles, including the pictured Avebury Stone Circle in England, which is bigger and older than Stonehenge! Link
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