Archaeologists have uncovered another mystery at Stonehenge - a nearby circle of believed to be connected to the neolithic structure.
Researchers used magnetic sensing to detect a circle of pits - 30 feet wide and 15 feet deep - that surround the ancient village where the builders of Stonehenge lived. The pits are dated to about 2500 B.C.
Historians still don't know why Stonehenge was built but have made a number of significant discoveries in recent years.