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Study: Stonehenge's 'Altar Stone' Came from Far Away Scotland


FILE - Revelers gather at the ancient stone circle Stonehenge to celebrate the Summer Solstice, the longest day of the year, near Salisbury, England, Wednesday, June 21, 2023. (AP Photo/Kin Cheung, File)
FILE - Revelers gather at the ancient stone circle Stonehenge to celebrate the Summer Solstice, the longest day of the year, near Salisbury, England, Wednesday, June 21, 2023. (AP Photo/Kin Cheung, File)
Study: Stonehenge's 'Altar Stone' Came from Far Away Scotland
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Researchers are one step closer to understanding how Britain’s ancient circular structure, Stonehenge, was created.

The circle of huge rocks stands in southern England. Its so-called altar stone lies flat in the center. The new study finds that the huge altar stone did not come from nearby Wales as had been thought. The researchers say the rock instead was carried to the site from the more distant Scotland.

Nature magazine published the study on Wednesday. The research did not show how the five-meter-long stone was carried to the site. But the scientists said it traveled about 740 kilometers.

“It’s a surprise that it’s come from so far away,” said University of Exeter archaeologist Susan Greaney, who was not involved in the study.

For more than a hundred years, scientists believed that Stonehenge’s central sandstone slab — long called the “altar stone" — came from much closer Wales. But a study last year by some of the researchers showed that the stone did not match the geology of Wales’ sandstone formations. The actual source of the stone remained unknown until now.

In this photo provided by researchers in August 2024, Stonehenge's Altar Stone lies underneath two Sarsen stones in Wiltshire, England. (Nick Pearce/Aberystwyth University via AP)
In this photo provided by researchers in August 2024, Stonehenge's Altar Stone lies underneath two Sarsen stones in Wiltshire, England. (Nick Pearce/Aberystwyth University via AP)

For the study, the team tested mineral content in pieces of rock that had been collected in past digs. They found a match in the sandstone formations of Orcadian Basin in northeastern Scotland. The area includes parts of the end of the Scottish peninsula as well as the Orkney Islands.

“That geological ‘fingerprint’ isn’t repeated in any other area of sediment in the U.K.,” said Aberystwyth University geologist Nick Pearce, one of the study writers.

Greaney said the operational complexity of moving the stone so far suggests a high level of planning, cooperation and cultural connection between these two parts of ancient Britain.

Stonehenge went up around 5,000 years ago. Its design creates a kind of “window” that fully frames the sun as it rises on the summer solstice. The ancient purpose of the altar stone remains a mystery.

FILE - The world heritage site of Stonehenge is seen in Wiltshire, England on Dec. 17, 2013. (AP Photo/Alastair Grant, File)
FILE - The world heritage site of Stonehenge is seen in Wiltshire, England on Dec. 17, 2013. (AP Photo/Alastair Grant, File)

“Stonehenge isn’t a settlement site, but a place of ceremony…,” said Heather Sebire, with English Heritage, an aid organization that cares for hundreds of historic British sites and structures. Sebire said that past archaeological digs had not uncovered evidence of daily living at Stonehenge.

Past research has shown cultural connections — such as similarities in pottery making — between the area around Stonehenge and Scotland’s Orkney Islands. Other stones at Stonehenge came from western Wales.

Britain is home to other ancient stone circles. But, study writer Richard Bevins of Aberystwyth University says, “the thing that’s unique about Stonehenge is the distance from which the stones have been sourced.”

I’m Caty Weaver.

Christina Larson reported this story for The Associated Press. Caty Weaver adapted it for Learning English.

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Words in This Story

match v. to make or find the equal or the like of

peninsula n. a piece of land nearly surrounded by water or sticking out into the water

geological adj. of, relating to, or based on geology, a science that deals with the history of the earth and its life especially as recorded in rocks

sediment n. the material from a liquid that settles to the bottom

solstice n. either of the two points on the ecliptic at which its distance from the celestial equator is greatest and which is reached by the sun each year about June 21 and December 21

pottery n. clayware, especially earthenware as distinguished from porcelain and stoneware and from brick and tile

unique adj. being the only one; singular; unlike any other

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