The rath here was trivallate, meaning it was ringed by three concentric banks and ditches, a form associated with higher-status early medieval farmsteads and enclosures. At its greatest extent it measured around 60 metres across. Today, a single bank remains, roughly 38 metres across, low and worn, with a concave interior and a possible entrance gap on the north-western side. The rest was levelled during the 1970s.

The documentary record gives a sense of how much has been lost. The 1846 Ordnance Survey six-inch map showed a circular trivallate enclosure, still apparently intact. By the 1894 revision it was recorded as roughly oval, suggesting some alteration had already occurred. In the 1840s it was described as a 'very large' rath towards the centre of Leamnaguila, and in the 1940s a Schools Manuscript recorded 'three earthen rings about a fort in Mrs. Lenihan's farm in Leamnaguilea', a detail that anchors the site to a specific local landholding within living memory of people who would have known it well. Associated with the rath is a possible souterrain, an underground passage or chamber of the kind frequently found beneath early medieval ringforts, typically used for storage or concealment. A second rath lies roughly 180 metres to the east, a reminder that these enclosures often appear in clusters across the Irish landscape rather than in isolation.