A new scientific study has revealed critical details about what researchers are calling Britain’s largest prehistoric structure, a massive ring of Neolithic pits surrounding Durrington Walls Henge near Stonehenge.
The findings come after advanced analysis by a team led by the University of Bradford, with key contributions from the University of St Andrews.
The site, located just north of Stonehenge, includes at least 16 large pits forming a near-perfect circle. Measuring up to 10 meters (33 feet) wide and 5 meters (16 feet) deep, these man-made features form part of a vast complex that significantly extends the known boundaries of the Durrington Walls monument.
Scientists now confirm that the pits were likely dug and filled around 2480 BC, based on precise dating using optically stimulated luminescence.
Scientific analysis confirms Neolithic origins
Researchers from the University of St Andrews revisited the area to carry out detailed geophysical and environmental testing. Their goal was to determine the age of the pits and to better understand the landscape in which they were constructed.
The recent analyses confirmed that the features are not natural formations but were intentionally excavated during the late Neolithic period.
Tim Kinnaird, who led the dating work at the University of St Andrews’ Earth and Environmental Sciences Dating Laboratory, said the data clearly show the pits were built in a tightly coordinated effort.
He explained that both the uniform chemical makeup of the sediment and the tight time window in which the pits were filled suggest the work was carried out over a short span of time by an organized group living in the area.
Engineering behind Britain’s largest prehistoric structure
Additional insight came from sedimentary DNA testing, which revealed traces of plants and animals once present in the chalk-rich soil.
This environmental evidence supports the view that the pits are part of a cohesive structure, rather than isolated features. Even in a landscape as archaeologically rich as that around Stonehenge, the scale and precision of this circular arrangement stand out.
Richard Bates, a geophysics expert from the University of St Andrews who worked on the survey, emphasized the remarkable accuracy in placing the pits across such a wide area.
He noted that the effort and planning required to align them so precisely highlight the builders’ knowledge of the landscape. Bates added that using a combination of scientific methods, including geochemical and geophysical tools, was essential to fully uncover the complexity of the site.
This research brings new attention to the broader Durrington Walls complex and reshapes the understanding of Neolithic activity in the area.
