At Knocknasop in Curheen, what survives of a substantial circular rath, roughly fifty metres across, amounts to little more than a low bank rising from the surrounding pasture. Most visitors, if they found themselves here at all, would likely walk across it without pausing.

A rath is an early medieval enclosure, typically earthen, built to define and protect a farmstead or the residence of a person of local standing. They are among the most common field monuments in Ireland, numbering in the tens of thousands across the country, yet each one marks a deliberate act of construction and occupation, usually dated somewhere between the sixth and twelfth centuries. Knocknasop sits on a gentle rise in undulating grassland, a position that would once have offered a modest but meaningful vantage over the surrounding landscape. The earthwork is now very poorly preserved, its original profile worn down by centuries of agricultural use, weather, and the slow pressure of grazing animals, but the circular form can still be traced on the ground if you know what you are looking for.