Geological Analysis: Recent geological studies indicate that the Altar Stone's composition does not match the previously assumed source, leading researchers to believe it came from a different quarry in Wales.

Historical Implications: This finding challenges earlier theories about the logistics and routes taken by ancient builders, potentially altering the historical narrative of how Stonehenge was constructed.

Technological Methods: Advanced technology, including geochemical fingerprinting, was used to match the stone's composition with potential quarry sites, showcasing the role of modern science in unraveling ancient mysteries.