The Altar Stone is traced to north-east Scotland

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Clarke, Kirkland and colleagues report in Nature that the recumbent Altar Stone at Stonehenge is not Welsh sandstone as long assumed but matches Old Red Sandstone of the Orcadian Basin in north-east Scotland, implying transport of a six-tonne block over several hundred kilometres. It changes the geography of the monument's supply network, and it changes it after two centuries of confident attribution to Wales.

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Evidence · 1

A Scottish provenance for the Altar Stone of Stonehenge

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Stonehengeassesses

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