Drumlins, those smooth elongated hills shaped by glacial activity, were favoured sites for early Irish fortifications: the natural elevation offered visibility and a degree of defensibility without requiring the builders to do the work of the hill themselves. This one carries its enclosure well, the raised ground and surrounding fosse giving it a presence that is easy to miss from a distance but hard to ignore once you are standing beside it.

The enclosure measures roughly 40 metres north to south and 38 metres east to west, making it a substantial example of what is broadly classified as a ringfort, the most common type of early medieval settlement monument in Ireland. A ringfort typically consists of a circular or subcircular area enclosed by one or more banks of earth or stone, with a corresponding external ditch or fosse. Here the bank runs to between seven and eight metres in width and stands about a metre high, with an external fosse that varies in depth from around 0.4 to 1.5 metres and stretches to 7.5 metres across. A gap of four metres in the bank on the east-south-east side is the most likely candidate for the original entrance, oriented as it is away from the prevailing weather and towards lower ground. A field boundary now skirts the monument along its northern arc, one of those small indignities that working agricultural land tends to visit on ancient structures over time.