It measures roughly 25 metres across and is ringed by an earthen bank about a metre high, stone-faced on both its inner and outer sides, much like the ordinary field boundaries that surround it. That resemblance to everyday farmwork is precisely what makes it quietly puzzling: why would someone go to the considerable effort of constructing a neat, deliberately circular enclosure and then apparently do nothing with it?

The interior is level and overgrown, which offers few clues. The working theory is that it may be an estate feature, the kind of ornamental or functional addition that landed families occasionally introduced to their grounds in the eighteenth or nineteenth centuries. Circular enclosures of this type could serve as kitchen gardens, animal pens, or even decorative landscape elements. Without documentary evidence linking it to a particular estate or owner, however, that remains a suggestion rather than a conclusion. It is the sort of structure that sits just outside the reach of confident interpretation, neither clearly ancient earthwork nor obviously practical enclosure.