That curve in the earth and stone bank, barely half a metre high on its outer face, is the eastern arc of a probable rath, the type of enclosed farmstead that tens of thousands of early medieval Irish families once lived within. The rest of the outline has largely been absorbed into the working landscape: the southern arc survives only as a faint undulation in the pasture, the western arc has vanished entirely, and a 2.3-metre gap cut through the surviving bank now serves as a tractor entrance.

The enclosure appears on the 1838 Ordnance Survey six-inch map as a roughly circular embanked feature, already sitting on the ridge with wide views to the north-east. By the time the 1916 edition was produced, it had been redrawn as a subrectangular shape, its maximum dimensions between 18 and 22 metres, and it had begun to merge with the linear field boundaries around it. The northern arc may never have needed much construction at all; it seems to have coincided with the natural break of slope at the ridge edge, where the ground itself provided a degree of enclosure. What the map record shows, across those two editions separated by nearly eighty years, is a structure being slowly digested by agricultural reorganisation.

The most puzzling feature lies towards the north-western edge of the original enclosure, where two conjoined hollows sit on a north-south line, each ringed by a low bank and together forming a rough figure-of-eight shape. The northern hollow measures around five metres across and is the more pronounced of the two; the southern is smaller and less clearly defined. Both are partly filled with loose field stones. Whether they represent the remains of hut sites once associated with the enclosure, or simply small quarry pits dug at some later point, is genuinely uncertain. The county border with Roscommon lies just 135 metres to the south-east, a reminder that this ridge, now quiet reclaimed pasture, once sat close to a boundary that mattered.