Archaeologists have discovered a wooden version of British prehistoric monument Stonehenge at the same site, the project's leader told Reuters. By using virtual technology, the archeologists found a circular ditch less than one kilometer away from the iconic stone circle, which is thought to date back to the Neolithic period 2,000 to 4,000 years ago. “This finding is remarkable,” said Vince Gaffney, professor of archeology at the University of Birmingham, and the project's leader. “It will completely change the way we think about the landscape around Stonehenge.” The new henge is a ditch with internal pits about a meter wide which could have held timber posts. It measures 25 meters (82 ft) in diameter, just five meters less than Stonehenge. The team believes it was built around the same time as Stonehenge. The archeologists were just two weeks into a three-year multi-million euro project using cutting-edge virtual mapping technology.