The site measures roughly 48.5 metres east to west and 46.5 metres north to south, making it a substantial example of a rath, the most common monument type in the Irish countryside. A rath is essentially a ringfort, a roughly circular enclosure defined by one or more earthen banks, used during the early medieval period as a farmstead and its associated enclosure. Here, the boundary is formed by a scarp, a steep face cut into the ground surface, combined with an external fosse, a surrounding ditch, running from the north-east around through the south and on to the south-west.

Locally, the site has long been known as Aille Fort, a name recorded as far back as 1914 by Neary. That continuity of local naming is itself telling; it suggests the monument remained a recognisable landmark across generations, even as the land around it shifted to agricultural use. Field banks radiate outward from the enclosure at the south-east and south-west, a detail that hints at older patterns of land division once organised around the fort itself. Less happily, quarrying has bitten into the enclosing elements at the north-east, blurring what would originally have been a more complete circuit. A hollow visible within the interior appears to be modern in origin rather than an ancient feature, a reminder that sites in fair condition, as this one is described, have nonetheless absorbed the small disturbances of ordinary land use over many decades.