It measures roughly 24 metres across, its boundary marked by an earthen bank that rises only about 70 centimetres above the surrounding ground. Heavily overgrown and easy to mistake for a natural undulation in the slope, it is the kind of place that rewards a slow walk and a certain willingness to look twice.

This is a rath, the most common type of ringfort found across Ireland, typically dating from the early medieval period, roughly the sixth to the twelfth centuries. A rath was usually a farmstead enclosure, built up from earth rather than stone, with the raised bank serving to define a household's space, keep animals in or out, and perhaps signal a family's status within the landscape. Thousands survive across the country in varying states of preservation, and this one in Carrig sits on a west-facing slope, its circular form still legible despite the vegetation that has crept over it. The low profile of the bank suggests centuries of gradual erosion and the steady pressure of agricultural use around it, though the underlying shape has persisted.