The rath at Ardmore consists of an almost perfectly circular earthen enclosure measuring 36 metres in internal diameter. Its defensive bank varies dramatically in height; the southern side rises impressively to nearly two metres, whilst the northern section appears considerably more modest, perhaps worn down by centuries of weather and farming activity.

The earthwork features three gaps along its northeastern side, and archaeologists continue to debate which of these served as the original entrance. These breaks in the defensive perimeter would have provided access to what was likely a prosperous farmstead during the early medieval period, roughly between the 5th and 12th centuries. The strategic positioning on elevated ground wasn’t merely for defence; it offered commanding views across the surrounding landscape, allowing inhabitants to monitor their cattle grazing in the valley below and keep watch for approaching visitors or threats.

Like thousands of similar sites scattered across Ireland, this ringfort would have enclosed a collection of timber or wattle and daub buildings where an extended family lived, worked, and stored their agricultural produce. The substantial earthen bank that survives today once supported a wooden palisade, creating a formidable barrier that protected both people and livestock. Its location overlooking such productive farmland suggests this was home to a relatively wealthy farming family who could marshal the labour needed to construct such an impressive earthwork.