It has never been excavated, and its outline exists only as a pattern of magnetic anomalies detected by geophysical survey, a technique that reads subtle variations in the soil without lifting a spade. What those readings reveal is a ring-ditch, a type of monument typically associated with prehistoric funerary or ritual activity, often the eroded remains of a burial mound whose earthen bank has long since flattened into the landscape.

The feature was identified in 2009 during survey work conducted by Dr. Roseanne Schot, roughly twenty metres to the north-east of a hilltop enclosure already recorded at Mweelra. The ring-ditch itself is defined by a discontinuous circular band of positive magnetic values, about one metre wide, forming a circuit approximately seven metres in diameter. Along that circuit, several pit-type anomalies appear, and a larger pit sits at the centre of the enclosed area. Further possible pits, ranging from one to two and a half metres in diameter, cluster around the monument on its western, eastern, and southern sides. Around six metres to the south, the survey also picked up traces of what may be a second ring-ditch, though this remains less certain. Together, these features suggest that the hilltop at Mweelra was not simply the site of a single enclosure, but may have formed part of a broader complex of activity, with the ring-ditch and its associated pits representing an earlier, or at least distinct, phase of use close to the summit.