The mystery of the Stonehenge stone altar is becoming even more intriguing. The latest research suggests that the origin of this crucial element is far more complicated than previously thought. What new discoveries have scientists managed to uncover?

The mystery of Stonehenge's stone altar is becoming even more intriguing. The latest research suggests that the origin of this crucial structure element is far more complicated than previously thought.

Stonehenge's iconic Altar Stone did not come from Orkney - but elsewhere in north-eastern Scotland, scientists say. The new findings

The quest for the origins of Stonehenge's six-tonne Altar Stone continues as new research has found it did not come from mainland Orkney. Last month it was revealed the iconic stone came from north-east Scotland and not Wales, like the monument's bluestones do.

More research could help to discover whether a central part of the world-famous prehistoric monument at Stonehenge really did come from Caithness.

The mysterious origins of Stonehenge’s Altar Stone has deepened as new research has found it did not come from Orkney