It is so named because in plan it consists of a small round area with a long entrance track leading inward from one direction.
The enclosure is defined by a low bank and ditch.
The earthworks at the end of the track are sometimes turned outward, creating a funnel effect.
The enclosure used to be thought of as a small farming settlement occupied around 400 BC to AD 43; however, because of the lack of finds relating to settlement it is currently thought to be a seasonal ritual centre where feasting occurred.
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