The site was only identified through aerial photography, which revealed a sub-circular cropmark, the kind of faint discolouration in growing crops that betrays buried or disturbed ground beneath. Cropmarks form when buried features such as filled ditches or compacted banks affect how plants grow above them, leaving patterns invisible at ground level but legible from the air. What the camera captured was the outline of a roughly circular enclosure, pressed up against a second enclosure immediately to its north.

On the ground, the picture is considerably less dramatic. The monument sits on a level area at the upper edge of an east-facing slope, now given over to improved pasture. What little physically remains is a shallow, semi-circular depression and the faint trace of a levelled bank, detectable only towards the south-west, west, and north-west. The downslope side to the north-east has been almost entirely smoothed away, and the field boundary that once ran to the west has also been removed. The enclosure has, in other words, been incrementally erased by the ordinary processes of agricultural improvement, the banking levelled, the boundaries cleared, the ground tidied into productive grassland. That the site is known at all is largely a matter of fortunate timing, a flight, a camera, the right crop at the right moment.