Tuesday, December 20, 2011

So THAT'S where the rocks for Stonehenge came from 5,000 years ago

For centuries, scientists and historians have argued over why Stonehenge was built and, even more puzzlingly, how.

They are now closer to cracking one aspect of the mystery after working out the exact spot where some of the rocks came from.

The 5,000-year-old circle of stones – thought at various times to have been a temple of healing, a calendar, or even a royal cemetery – have been traced to an outcrop 150 miles away in north Pembrokeshire.

Dr Richard Bevins of the National Museum of Wales and Dr Robert Ixer at Leicester University narrowed down the source of the rocks, – called rhyolites – to the 70m-long (0.04 miles) area called Craig Rhos-y-Felin after testing thousands of samples and finding a match.

He said the breakthrough would help experts work out how they were moved to the site in Wiltshire, which attracts more than a million tourists a year. Read More