At Cornacullew in County Longford, one such fort sits on a low but prominent drumlin in open pasture, its circular outline still readable in the landscape even after centuries of agricultural wear. What makes it quietly interesting is how much of the original engineering can still be pieced together, and how much has quietly disappeared.

When surveyed in 1976, the site presented as a raised circular area roughly 35 metres in diameter, enclosed by a substantial bank of earth and stone with an external fosse. A fosse is simply a ditch dug around a fortified enclosure, and here it measured about 6.5 metres wide and 0.4 metres deep. A scarp, the steep face of the bank, rose between one and two metres in height. The original entrance was likely positioned at the north-east, which is common enough in Irish ringforts. By the time of that survey, however, the scarp and portions of the interior had already been removed along the north-east to east to south arc, meaning the fosse is now only legible from the northern and north-eastern sides. What survives is a partial silhouette of something that was once a well-defined enclosure, the kind of defended farmstead that would have been a familiar sight across early medieval Ireland.