The site at Gortgarralt is a rath, the Irish term for a ringfort, which was a type of enclosed farmstead common across Ireland from roughly the early medieval period. What makes this one quietly worth noting is the precision with which its original form survives in description, even as the ground itself has been swallowed by vegetation.

When O'Kelly recorded this enclosure in 1942 to 1943, the structure was already dense with bushes, but its layout remained legible. The rath sat on a low platform, with a bank running along its outer edge and a fosse, meaning a ditch, encircling that. Measuring around 46 metres in overall diameter, the entrance on the south side was marked by a deliberate break in the bank and a causeway crossing the fosse, the kind of feature that tells you the original builders were thinking carefully about approach and access. The site was situated in good lowland, as O'Kelly noted, the sort of productive agricultural ground that would have made it an attractive location for a farming settlement many centuries before his visit. The map name recorded at the time was Lisduff, a placename derived from the Irish for black fort or dark enclosure, though even by the 1940s that name had already slipped out of everyday use among local people.

The enclosure outline remains visible today in Digital Globe aerial photographs, which is often the most practical way to appreciate the site's shape and scale, given the ground-level covering of scrub. For anyone who does visit Gortgarralt, the causeway approach from the south is the detail most worth seeking out, a small but specific remnant of how the space was organised and entered. The broader lowland setting gives a sense of why this kind of location was chosen, open and workable land that would have supported whoever once lived within that banked perimeter.