The wall that surrounded this roughly circular space was, by local account, five feet high and five feet thick, a serious construction by any measure, yet it was levelled sometime in the mid-twentieth century and today leaves no trace at ground level.

The enclosure shows up on the first edition Ordnance Survey six-inch map of 1839 as a small sub-rectangular field, a shape that had softened into something more circular by the time the 1900 revision was drawn, though that circular outline appears to have been formed from short runs of straight walling rather than a smoothly curved perimeter. At roughly fifty metres in diameter, it sat slightly below the hill's crest on the south-western side of a valley, with the slope running gently from north to south. Its purpose is not entirely clear. One possibility is that it functioned as a haggard, the term for a farmyard enclosure used to store hay or grain, associated with a farmyard that stood immediately to its north-west. Whether it was ever anything more than a practical agricultural boundary is unknown, and the loss of the physical structure means the question is unlikely to be resolved with any certainty.