Still, a Scottish origin for the altar stone defies prior knowledge about Stonehenge’s origins.
The UNESCO World Heritage Site was built in stages by multiple groups of people over around 2,000 years.
They were probably rearranged in the 2,200s BC, and the site remained in use until around 1,500 BC.

Parts of the structure are carefully aligned so that the sun lights them during the summer and winter solstices.
Whoever constructed Stonehenge shaped the rocks into their current form and used indentations to lock them into place.