A circular structure approximately 60 metres in diameter, set between two watercourses, comprising a ditch and an earthen bank enclosing a central basin. The single point of access, oriented towards the sunrise on the winter solstice, suggests a possible symbolic or ritual function dating from prehistoric times.
Site overview
The structure is circular, roughly 60 m in diameter, and situated on flat land near where the Casternone and Codano rivers meet.
It comprises an outer ditch, an earthen bank, and probably several associated features, including a terrace and a partial embankment to the south.
The central area is at ground level, giving the whole structure the appearance of a basin.
The site differs from typical medieval mottes, which are built to support a fortification with a central raised area above surrounding land and banks. Since there is no archaeological evidence, the strongest clue pointing to a prehistoric origin for the Circle is the single opening that crosses the ditch and bank, providing access to the basin’s interior. Located to the southeast and constructed as an earth bridge, this opening aligns with the sunrise at the winter solstice, resembling other similar ancient structures like the Neolithic Goseck Circle in Germany.
This is an important fact, but it is not enough to be conclusive by itself.
How to visit the site
Hamlet of Brione, Airal/Buttiberghe, Val della Torre (TO).
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