The enclosure measures roughly 35 metres across, its bank rising about a metre in height, with a faint trace of an external fosse, or ditch, still visible along the northern side. It is heavily overgrown and effectively inaccessible, which means most people who pass anywhere near it have no particular reason to know it is there.

This is a rath, the most common type of early medieval settlement monument found across Ireland. A rath typically consisted of a circular area enclosed by one or more earthen banks and ditches, within which a family or small community would have lived, keeping livestock, storing grain, and carrying out the ordinary work of early Christian period rural life. Thousands of these structures once dotted the Irish landscape, and while many have been levelled by centuries of ploughing or development, a significant number survive in marginal ground, precisely because such land was never worth the effort of clearing them. The Castleredmond example, sitting in level rough grazing, fits that pattern well. Its modest bank and the ghost of its northern fosse are the only visible signs of what was once an inhabited, organised space.