Roughly subrectangular in plan and measuring around 40 metres long by 25 metres wide, it is the kind of structure that rewards a careful eye rather than a casual glance. From a distance, or in poor light, it could easily be dismissed as a field boundary or a scatter of fallen stone.

Drystone enclosures of this type, built without mortar and relying entirely on the careful selection and stacking of local stone, appear throughout the west of Ireland. They served a range of purposes across different periods, from the enclosure of livestock and agricultural land to the demarcation of early ecclesiastical or settlement sites. This particular example, recorded in the townland of Cloonamore, survives most legibly along its western side, where the wall still stands to roughly half a metre in height and retains a width of between one and one point two metres. The rest has deteriorated considerably, making the full extent of the structure difficult to read on the ground. Its position on a terrace rather than on the island's low-lying interior suggests it may have been chosen for visibility, drainage, or some other practical consideration that made elevated ground worthwhile.