But the low curves in the ground at Lisnafulla tell a more deliberate story. This is a rath, a type of ringfort that once served as a defended farmstead during the early medieval period in Ireland, roughly between the fifth and twelfth centuries. What remains here is a roughly circular enclosure measuring about 46.4 metres across on its northwest to southeast axis, defined not by one earthen bank but by two concentric ones, with a fosse, that is a ditch, running between them and a further external fosse beyond that. The layering of these defences is quietly impressive, even if the whole thing now sits inconspicuously in a working agricultural landscape.

The site was recorded and compiled by Denis Power, with notes uploaded in August 2011. At that time, the inner bank stood to an internal height of around 0.6 metres and an external height of 1.2 metres, while the outer bank measured roughly 0.9 metres on the interior face and 0.7 metres externally. The intervening fosse between the two banks was recorded at just over three metres wide, and the external fosse at roughly 2.2 metres wide and 0.35 metres deep, modest dimensions but legible enough to indicate the original design. One section of the enclosure on the northwest to northeast side has been absorbed by a later field boundary, which follows a straighter arc than the original earthwork it partly replaces. A field boundary that once abutted the enclosure at the south-southwest has since been removed entirely, a small erasure that is nonetheless typical of how agricultural activity has rearranged these sites over generations.

The interior is level pasture and is actively used by cattle, which have done some damage to both banks over time, wearing them down in places where animals have pushed through to reach the interior. Dense briar and bush growth masks much of the earthworks, so reading the full shape of the site on the ground requires a patient eye and, ideally, some awareness of what to look for before arriving. There is a small, subtle rise just southwest of centre, roughly three metres across and about 0.2 metres high, the purpose of which is not specified in the record but is the kind of feature worth noting if you are picking your way carefully through the vegetation. A farm trackway runs along the western side of the enclosure, and a complex of farm buildings sits a short distance to the north, giving the whole area a thoroughly working quality that makes the ancient earthwork feel both well-embedded and easily missed.