A TEAM of experts led by the University of Bradford has discovered what could be one of the largest prehistoric sites in the UK on the doorstep of Stonehenge.

The 4,500-year-old previously-unknown structure is 2km across and it is thought the circular feature and a post line could have guided people towards the religious sites and warned others not to cross the boundary.

The archaeologists found the ring of prehistoric pits up to 10m across and 5m deep surrounding the ‘super henge’ at Durrington Walls and the famous site at Woodhenge.

The structures have been carbon dated to about 2500BC and archaeologists believe the circle marks a boundary around the massive henge at Durrington.

Stonehenge, which was constructed between 3000 and 2500BC, is set within a huge ceremonial landscape that staff at the University of Bradford have been investigating for decades.

The news of the discovery was released the day after midsummer when hundreds of people normally gather at the stones to mark the solstice sunrise.

Prof Vince Gaffney, 50th Anniversary Chair of the School of Archaeological and Forensic Sciences in the Faculty of Life Sciences, said it was extraordinary such a major find had been made so close to Stonehenge.

He said: “The area around Stonehenge is amongst the most studied archaeological landscapes on Earth and it is remarkable that the application of new technology can still lead to the discovery of such a massive prehistoric structure which, currently, is significantly larger than any comparative prehistoric monument that we know of in Britain, at least.

Bradford Telegraph and Argus: The new discovery (yellow dots) within the Stonehenge landscapeThe new discovery (yellow dots) within the Stonehenge landscape

“When these pits were first noted it was thought they might be natural features - solution hollows in the chalk.

“Only when the larger picture emerged, through the geophysical surveys undertaken as part of the Stonehenge Hidden Landscape Project, could we join the dots and see there was a pattern on a massive scale.”

Research on the pits at Durrington was undertaken by a consortium of archaeologists led by the University of Bradford as part of the Stonehenge Hidden Landscape Project, and with the Ludwig Boltzmann Institute for Archaeological Prospection and Virtual Archaeology, the Universities of Birmingham, St Andrews, Warwick, the University of Wales Trinity Saint Davids, and the Scottish Universities Environmental Research Centre (University of Glasgow).

Researchers have identified up to 20 ‘shafts’ but estimate there may have been more than 30 originally.

“The size of the shafts and circuit surrounding Durrington Walls is without precedent within the UK,” added Prof Gaffney.

“It demonstrates the significance of Durrington Walls Henge, the complexity of the monumental structures within the Stonehenge landscape, and the capacity and desire of Neolithic communities to record their cosmological belief systems in ways, and at a scale, that we had never previously anticipated.”

Dr Nick Snashall, National Trust archaeologist for the Stonehenge and Avebury World Heritage Site, said: “As the place where the builders of Stonehenge lived and feasted Durrington Walls is key to unlocking the story of the wider Stonehenge landscape, and this astonishing discovery offers us new insights into the lives and beliefs of our Neolithic ancestors.

“The Hidden Landscapes team have combined cutting-edge, archaeological fieldwork with good old-fashioned detective work to reveal this extraordinary discovery and write a whole new chapter in the story of the Stonehenge landscape.”