The experts believe that Camelot could in fact have been Chester Amphitheatre, a huge stone-and-wood structure capable of holding up to 10,000 people.
They say that Arthur would have reinforced the building’s 40ft walls to create an imposing and well fortified base.
The king’s regional noblemen would have sat in the central arena’s front row, with lower-ranked subjects in the outer stone benches.
Arthur has been the subject of much historical debate, but many scholars believe him to have been a 5th or 6th Century leader.
The legend links him to 12 major battles fought over 40 years from the Scottish Borders to the West Country. One of the principal victories was said to have been at Chester.
Rather than create a purpose-built Camelot, historian Chris Gidlow says Arthur would have logically chosen a structure left by the Romans.
‘The first accounts of the Round Table show that it was nothing like a dining table but was a venue for upwards of 1,000 people at a time,’ he said.