The buried circle has been found inside Castilly Henge, near Bodmin, by Historic England (HE) and the Cornwall Archaeology Unit. It was found during the site's first modern archaeological survey to better understand the area, HE said.
The site has now been fenced, allowing it to be grazed by animals without damaging the structure, it added. The henge is one of 40 scheduled monuments protected by the Cornwall Area of Outstanding Natural Beauty.
The 225ft long by 205ft wide (68m by 62m) oval enclosure is believed to have been built during the late Neolithic period (circa 3,000 to 2,500 BC), forming an amphitheatre-like setting for gatherings and ritual activities, HE said.
It was on Historic England's heritage at-risk register because its location made it difficult to look after, and its earthworks and part of the interior had been heavily overgrown with bracken, project bosses said.
The circle, composed of seven points, was likely, along with the henge itself, to have been "used for ritual activities", HE said. It was found with ground-penetrating radar and earth resistance techniques, using small electric currents passed through the ground.
https://www.bbc.co.uk/news/uk-england-cornwall-61492367
Interesting find, I do wonder how they know the pits held stones though, As they could have held timbers (or be just pits), I do imagine it was stones myself but i just wonder how they know!
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