Stonehenge mystery deepens
Scientists have pinpointed the exact source of many of the rocks used to build Stonehenge.
The say the smaller stones, known as bluestones, came from a newly discovered site in the Preseli Hills in Wales.
The stones’ rock composition revealed they come from a nearby outcropping, located about 1.8 miles (3 kilometers) away from the site originally proposed as the source of such rocks nearly a century ago - and call into question the theory the stones were floated down the Bristol Channel on rafts.
