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Stonehenge: Scientists Discover Origin of Iconic Sarsen Stones
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These hulking great rocks have given up one of their secrets: where they came from. New scientific research has found the large boulders at Stonehenge, known as sarsens, were brought here from West Woods, in another part of Wiltshire in England.
For Professor David Nash of Brighton University, this was an exciting discovery.
"We found it and you're like, oh, my goodness. One of those kinds of hairs on the back of the neck, moments," he says.
Nash and his team analyzed the stones using X-rays and a core sample from the 1950s.The results matched with rocks found a short distance away.
"Compare the chemistry of this rock against samples from across southern Britain, where sarsen stones also occur. And by doing that, we're able to identify a direct chemical match with one area about 15 miles to the north of here, at a place called West Woods on the Marlborough Downs," he explains.
The discovery contradicts another theory that one large sarsen, the Heel Stone, came from the immediate vicinity of the monument and was erected earlier than the others. It now seems the boulders were brought to the site at around the same time.
Similar large boulders can still be found in West Woods today.
"I was surprised to know that West Woods was that was the match for all bar two of Stonehenge's sarsens. And the reason I was surprised is because I really thought they would have come from from further afield and from different locations," says Katy Whitaker, Archaeologist, University of Reading.
Scientists already knew that Stonehenge's smaller 'blue stones' came from Wales. Uncovering the origin of the larger sarsens unlocks a little more of the puzzle.
But there are still mysteries that have not been solved.
"We now know where these stones come from. And that means we can ask new questions: which route do they bring them over? How exactly did they extract them? Can we find the sites where the individual stones actually came from?" says Susan Greaney, English Heritage.
"So this is opening up a whole number of other avenues of research. But at least we've answered one big question about Stonehenge."
The sarsens stand 30 feet tall and weigh as much as 25 tons each. Even at a distance of 15 miles, it's an impressive feat for the ancient builders of Stonehenge to have brought them there.
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For Professor David Nash of Brighton University, this was an exciting discovery.
"We found it and you're like, oh, my goodness. One of those kinds of hairs on the back of the neck, moments," he says.
Nash and his team analyzed the stones using X-rays and a core sample from the 1950s.The results matched with rocks found a short distance away.
"Compare the chemistry of this rock against samples from across southern Britain, where sarsen stones also occur. And by doing that, we're able to identify a direct chemical match with one area about 15 miles to the north of here, at a place called West Woods on the Marlborough Downs," he explains.
The discovery contradicts another theory that one large sarsen, the Heel Stone, came from the immediate vicinity of the monument and was erected earlier than the others. It now seems the boulders were brought to the site at around the same time.
Similar large boulders can still be found in West Woods today.
"I was surprised to know that West Woods was that was the match for all bar two of Stonehenge's sarsens. And the reason I was surprised is because I really thought they would have come from from further afield and from different locations," says Katy Whitaker, Archaeologist, University of Reading.
Scientists already knew that Stonehenge's smaller 'blue stones' came from Wales. Uncovering the origin of the larger sarsens unlocks a little more of the puzzle.
But there are still mysteries that have not been solved.
"We now know where these stones come from. And that means we can ask new questions: which route do they bring them over? How exactly did they extract them? Can we find the sites where the individual stones actually came from?" says Susan Greaney, English Heritage.
"So this is opening up a whole number of other avenues of research. But at least we've answered one big question about Stonehenge."
The sarsens stand 30 feet tall and weigh as much as 25 tons each. Even at a distance of 15 miles, it's an impressive feat for the ancient builders of Stonehenge to have brought them there.
QUICKTAKE ON SOCIAL:
QuickTake by Bloomberg is a global news network delivering up-to-the-minute analysis on the biggest news, trends and ideas for a new generation of leaders.
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