An ancient “square stone circle” has been discovered under the Neolithic stones at Avebury in Wiltshire.
The “surprising find”, which is 30m (98ft) wide, was made by archaeologists from Leicester and Southampton University.
The square of megaliths also appears to have been erected around the remains of a Neolithic house, which sat at the centre of the colossal stone circle.
The archaeological survey revealed a unique square megalithic monument at the heart of the World Heritage Site
It is thought to be one of the site’s earliest structures.
The discovery of previously unknown megaliths inside the monument has been greeted as a “great surprise”.
Read the full story on the BBC website
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