What looks, at a casual glance, like a gentle undulation in the ground is in fact the remains of a cashel, a type of ringfort built from dry-laid stone rather than earthen banks. The wall has long since settled and greened over, but the form it once described, a near-perfect circle roughly thirty metres across, is still readable in the landscape if you know what you are looking for.

Cashels of this kind were typically built during the early medieval period, from around the fifth to the twelfth century, and served as enclosed farmsteads for a single family or a small group. The drystone wall, mortarless and relying entirely on the careful placement of one stone upon another, would originally have stood to a considerable height, offering both a practical boundary for livestock and a degree of defence. At Corrafaireen, that wall survives only as a low, spread mound, its stones absorbed into the soil and obscured beneath turf. The diameter of just over thirty metres places it comfortably within the typical range for such enclosures, neither unusually small nor exceptionally large. The site is described as poorly preserved, which is perhaps an honest measure of how thoroughly the land can quietly reclaim even solid stonework over the course of centuries.