Source of Stonehenge Bluestone Rocks Identified

Scientists have found the exact source of Stonehenge's smaller bluestones, new research suggests.

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. The discovery of the rock's origin, in turn, could help archaeologists one day unlock the mystery of how the stones got to Stonehenge.

The work "locates the exact sources of the stones, which highlight areas where archaeologists can search for evidence of the human working of the stones," said geologist and study co-author Richard Bevins of the National Museum of Wales.

http://www.nbcnews.com/science/science-news/source-stonehenge-bluestone-rocks-identified-n37631