A rath is a roughly circular enclosure defined by an earthen bank and, typically, an outer ditch called a fosse; most date from the early medieval period and are thought to have served as enclosed farmsteads. This one at Carrownaglogh sits on level ground in a landscape of gently rolling pasture, its views cut off by rising terrain to the north and east, giving the site a quietly enclosed feeling even now.

The enclosure measures about 37 metres across and what survives of its defining bank reaches no more than half a metre in height at its best-preserved stretch, along the western to north-eastern arc. Elsewhere the bank has been reduced considerably: to the east and south-east it fades to little more than a slight rise beneath accumulated field clearance debris, and along the southern and south-western edge it has been cut away entirely where two later field walls meet and cross the monument. A band of thistles, four to five metres wide, running outside the bank to the north-east may point to a fosse that has since been filled in; dense thistle growth is a known indicator of disturbed or enriched ground. Inside, the surface is uneven and scattered with boulders, and there are hints of a depression running along the inner face of the bank to the north and north-west, though overgrowth obscured a clear view. The association with children's burial is a reminder that Irish ringforts were frequently repurposed across the centuries, their liminal status in the landscape making them spaces where communities placed the unbaptised dead, who under Catholic tradition could not be interred in consecrated ground. The farm track running immediately to the south of the site suggests the rath has been shaped, and slowly worn down, by the ordinary business of agricultural life for a very long time.