Roughly twelve metres across and no more than seventy centimetres at its highest point, it barely registers as a feature in the landscape. Yet it has been mapped since at least 1840, appearing on Ordnance Survey six-inch sheets from that year and again in 1916, and it sits within a cluster of prehistoric monuments that suggests this quiet corner of the Burren was once considered a place of some significance.

The mound is subrectangular in plan, slightly elongated on a north-south axis, and retains a notably flat top about ten metres in diameter with a low raised rim running around its upper edge. These characteristics point towards deliberate construction rather than natural accumulation, though the structure was recorded in 1996 as an enclosure rather than a cairn, reflecting genuine uncertainty about how to classify it. A cairn, in the general sense, is a mound of stones raised by human hands, often over a burial or as a territorial marker, and this one has been so thoroughly colonised by grass and soil that its stony interior now only hints at the effort once put into building it. About eighty metres to the west lies the walled garden of Leamaneh Castle, the dramatic tower house associated with the O'Brien family, while some 450 metres to the south Knockloon Hill carries its own ring-barrow and ring-ditch, a ring-barrow being a low circular earthen mound typically surrounded by a ditch, used for burial during the Bronze Age. Together, these features form a loose constellation of monuments scattered across the valley and hillside.