This is a rath, the Irish term for a ringfort, a type of enclosed farmstead built across Ireland roughly between the early centuries AD and the early medieval period. Thousands survive across the country, but this one carries a particular quality of quiet accumulation: generations of farming activity layered over the original structure, blurring the boundary between ancient monument and working landscape.

The rath sits on a fold in sharply undulating terrain, with a ridge rising steeply to its south-west. Its raised circular platform measures roughly 37.7 metres across, defined by a pronounced enclosing scarp that still stands around 1.75 to 1.8 metres high on its outer face. Inside, a low rim of earth and stone runs along the top of the scarp, giving the bank an overall width of six to six and a half metres. Beyond that, a fosse, the external ditch that would have reinforced the enclosure's defensive or boundary function, can still be traced as a shallow depression around much of the circuit, though at the south-east it is filled with heaps of loose stone, the accumulated debris of later agricultural clearance. Remnants of an outer bank survive at the north and south-east, and a later field fence running along the outer edge of the fosse to the south and north-west may, by coincidence or design, follow the original line of that bank. The entrance gap, two metres wide, opens at the north-east and retains a low stone kerb at one terminal, though its outer edge is now blocked by field clearance material. Among the loose stones in the interior, a fragment of a quern stone was recorded: a hand-operated grinding stone for processing grain, its central perforation still partially intact. It is a small, domestic object, but it places ordinary life at the centre of this overgrown enclosure, beside a ridge in Mayo that has been farming land for a very long time.