Stonehenge Revelation

Stonehenge's central Altar Stone originated from northern Scotland, roughly 450 miles from the ancient England site and over 300 miles farther than previously believed, according to new research yesterday. The discovery suggests significant collaboration among Neolithic peoples inhabiting the British Isles over 4,600 years ago. 

The 14,000-pound, 16-foot bluestone lies mostly underground at the center of the sprawling rock complex in Wiltshire in southwest England (see virtual tour). For a century, researchers believed the rock was mined from nearby Wales, but research in October cast doubt on that theory. By using a global rock formation database, the researchers matched the Altar Stone to the Orcadian Basin in northeast Scotland (how they did it).

The monument was erected prior to the invention of the wheel, leading scholars to speculate the Altar Stone may have been transported by sea. Watch more here.