Archaeologists just recently announced that there is a whole lot more to the ancient Stonehenge monuments than what was previously known.

National Geographic reports that researchers spent the last four years using new technology to create a high-resolution, 3D underground map of the area surrounding Stonehenge. What they found is jaw-dropping. Stonehenge doesn't stand alone - it appears to be part of a huge monument collection.

The mystery simply deepens.  Get more on the story here.