Grass-covered and roughly subrectangular, the feature measures around 36 metres from northwest to southeast and is defined by a broad, low bank, some 15 metres wide, curving around its western, northern, and southern edges. It is the kind of earthwork that the casual walker might take for a natural hollow, but the shape and the bank suggest otherwise.

The enclosure appears only on the 1839 edition of the Ordnance Survey six-inch map, where it was recorded as a circular embanked enclosure roughly 30 to 35 metres in external diameter. That early cartographic record is now its clearest piece of documentation. What the feature actually represents is less certain. It sits close to the headwaters of a north-south stream to the east, which raises the possibility that the earthwork is the remnant of quarrying activity, or that material was cut from here to reinforce the stream bank nearby. The more likely explanation, however, is that this was once a ringfort, the type of enclosed farmstead, typically bounded by an earthen bank and external ditch, that was constructed across Ireland in the early medieval period, from roughly the fifth to the twelfth centuries. Thousands survive in various states of preservation, but many have been worn down to little more than subtle undulations in agricultural land, recognisable only to those who know what to look for.