On the 1839 edition of the Ordnance Survey six-inch map, what may be the same feature appears as an unremarkable tree-ring, the kind of detail a cartographer would record without a second thought. It took a magnetic gradiometer survey, a technique that detects subtle variations in the earth's magnetic field to reveal buried ditches and features invisible at ground level, to confirm that this modest circle is one of four ring-ditches lying within a relatively compact area of farmland in the Wexford countryside.

A ring-ditch is typically the remnant of a prehistoric funerary or ceremonial monument, the circular fosse, or ditch, that once surrounded a burial mound or enclosed a ritual space, often all that survives after centuries of ploughing have levelled the upstanding earthwork above it. This particular example sits on a north-west-facing slope where a small stream running roughly north-north-east to south-south-west meets the Corock River, which at that precise point changes its own course from west-east to north-south. The feature measures approximately ten metres in diameter and is defined by a single fosse with two breaks, one to the south-east roughly a metre wide, and a broader one to the south at around three metres. Those gaps may indicate an original entrance or entrances into whatever the monument once enclosed. All four ring-ditches identified in the survey sit on land that was formerly part of the demesne of Coolcliffe House, meaning this prehistoric landscape lay quietly beneath what became a managed country estate, largely undetected until modern survey methods brought it back into focus.