The trees are the first giveaway, visible even on aerial photography, tracing the outline of an earthwork whose original purpose was domestic rather than military. This is a rath, a type of ringfort, the most common monument type in the Irish landscape. Raths were typically the enclosed farmsteads of early medieval families, the bank and fosse (a ditch cut outside the bank) providing as much a statement of status as any real defensive function. What survives at Kilgawny sits quietly in working farmland, its circular geometry still legible despite centuries of erosion and the more recent interventions of cattle.

The monument measures roughly 38.5 metres north to south and 37.5 metres east to west, dimensions recorded during a field inspection in 1980. At that point, the inner bank remained quite substantial along its eastern to western arc, though it had been reduced to a scarp, a gentle slope where a more upstanding bank once stood, along its northern section. Outside the inner bank, a fosse survives in good condition on the south-western side, wide and deep enough to be clearly read, though it has been partially infilled around the northern and eastern sections. Beyond the fosse, a very faint counterscarp bank, the low outer edge thrown up when the ditch was originally cut, is just about visible from the south and south-east. No original entrance has been identified, which is not uncommon where an earthwork has weathered to this degree. By 1837, when the Ordnance Survey mapped the area at six inches to the mile, the enclosure was already tree-lined and sitting within a pattern of intersecting field boundaries, suggesting it had long since been absorbed into the agricultural landscape around it.

The ridge position is worth noting. The rath commands extensive views to the west, north, and east, a placement that reflects the practical logic of early settlement, where visibility over the surrounding land mattered. Inside the modern western gap, a cattle crush now runs east to west across the interior, a mundane addition that nonetheless underlines how continuously this patch of ground has been put to agricultural use.