Recent research has disputed the previously held belief that the Altar Stone at Stonehenge originated from north east Scotland. Initial theories suggested a Welsh origin, but scientific tests failed to identify a matching source in Scotland, prompting researchers to refine their search for the stone's true origins.
Professor Duncan Pirrie, leading the study, emphasized that eliminating potential source areas is crucial for narrowing down the search. Understanding the Altar Stone's origin could provide significant insights into its historical journey to Stonehenge.