The enclosure measures roughly 28 metres across, and what defines it now is less a wall than a memory of one: a low earthen bank, most legible on its western arc, that has been slowly absorbed into the agricultural landscape surrounding it.

This is a ringfort, the most common monument type in the Irish countryside, of which tens of thousands once existed across the island. They were typically built during the early medieval period, roughly between the fifth and twelfth centuries, and served as enclosed farmsteads, the bank and any accompanying ditch marking the boundary of a family's dwelling and livestock area. At 28 metres in diameter, the Atticoffey example sits at the modest end of the scale. What survives is fragmentary: the western section of the bank retains something of its original form, while the rest has been reduced to little more than a slight rise in the ground, overgrown and easy to overlook. That kind of attrition is common enough, the result of centuries of ploughing, grazing, and land improvement that gradually erase the softer edges of earthwork monuments.