The collapsed stone wall that forms its boundary creates a roughly circular enclosure, measuring approximately 18 metres across from north-northwest to south-southeast, and 17 metres from west-northwest to east-southeast. Though time has taken its toll on the structure, patches of the outer stone facing remain visible around the entire perimeter, whilst the inner facing survives only on the western side, where the wall measures about 1.45 metres thick.

The southwestern section of the collapsed wall appears notably more substantial than elsewhere around the circuit, leading some archaeologists, including Michael Herity in 1971, to suggest this may indicate the presence of chambers or galleries built within the wall itself; a feature sometimes found in more elaborate cashels. Modern field walls have since been built across and on top of the ancient enclosure, a common sight in rural Ireland where old monuments often become integrated into the working landscape.

The cashel’s location was clearly chosen with defence and visibility in mind, positioned just inside the walls of a larger promontory fort known as Dún Ailt. From this elevated position amongst the rough pasture and exposed bedrock, the site commands an excellent view over the Glencolumbkille valley below, allowing its inhabitants to monitor the surrounding countryside whilst benefiting from the natural defences provided by the rocky terrain.