It is the kind of site that rewards a careful eye rather than a casual glance, its original form now compromised by later land use and the slow work of time. What remains is enough to suggest the scale of the original structure, even if the full circuit can no longer be traced.

The enclosure at Lisnarup in the townland of Pollatlugga is of the subcircular earthen type, a broad category that encompasses everything from early medieval ringforts, which were enclosed farmsteads typically defended by an earthen bank and ditch, to later enclosures of less certain function. Here, the surviving evidence runs from the south-west, around the northern arc, and down to the south-east, defined by a scarp, a low slope in the ground surface that marks where the bank once stood. Elsewhere, a field bank has been pressed into service as a boundary, blurring the distinction between ancient monument and agricultural boundary. A field fence cuts across the enclosure at two points, and quarrying has removed the enclosing element entirely at the south-west, leaving that section of the circuit unreadable.