While it had been known for more than a century that the huge sarsens for which Stonehenge is best known for come from more than 12 miles (20km) away and its “bluestones” originated in Wales, the discovery that the altar stone, which sits right at its heart, was Scottish caused an archaeological sensation, capturing headlines around the world.
The alter stone, which we now know is from Scotland, may have been a gift or marker of political alliance
Stonehenge may have been erected to unite early British farming communities, research finds
