
The following images show an impression of how the newly discovered stones may have appeared, believed to have been built before or during the time Stonehenge was erected.

The Stonehenge Hidden Landscape Project team says it has made the discovery beneath Durrington Walls, also known as "superhenge" -- one of the largest known henge monuments built about a century after Stonehenge, which is believed to have been completed 3500 years ago.

"Our high-resolution ground penetrating radar data has revealed an amazing row of up to 90 standing stones, a number of which have survived after being pushed over, and a massive bank placed over the stones," said Professor Wolfgang Neubauer, director of the Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology.

The site of Stonehenge, in Wiltshire, southwest England. "The extraordinary scale, detail and novelty of the evidence produced by the Stonehenge Hidden Landscapes Project, which the new discoveries at Durrington Walls exemplify, is changing fundamentally our understanding of Stonehenge and the world around it," Paul Garwood, an archaeologist and lead historian on the project at the University of Birmingham.

The map shows the site of the discovery. Archaeologists say the traces of larger stone monuments were discovered less than 3km from Stonehenge.

A motorized antenna array is used to penetrate the ground at the site. "Our high-resolution ground penetrating radar data has revealed an amazing row of up to 90 standing stones, a number of which have survived after being pushed over, and a massive bank placed over the stones," said Professor Wolfgang Neubauer, director of the Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology.