Re-dating of Flagstones monument to about 3,200BC came after analysis by Exeter University and Historic England

A prehistoric burial site in Dorset is now thought to be the earliest known large circular enclosure in Britain prompting researchers to question whether current dating of Stonehenge may need revising.

The Flagstones monument, near Dorchester in Dorset, has been re-dated to about 3200BC, approximately two centuries earlier than previously thought, following analysis by the University of Exeter and Historic England.