In a field of gently undulating pasture at Ballybricken, the outline of a rath survives in the ground, its earthen bank tracing an arc of about forty metres across. A rath is a ringfort, the most common monument type in the Irish countryside, built during the early medieval period as a farmstead enclosure, typically to protect a family and their livestock. What makes this one quietly interesting is not what remains but what has been taken away.

The site was recorded by Denis Power and uploaded to the national monuments database on 31 October 2013. According to those notes, the enclosing bank is clearest on its south-western to north-western arc, where it still stands roughly 1.5 metres high on the exterior and nearly ten metres wide at its base, though only about 0.35 metres proud of the interior ground level. A slight gap appears on the western side, possibly an original entrance. Moving around the circuit, the bank becomes progressively harder to read: there are traces of a levelled arc on the east-south-east, and from there around to the south-west it disappears almost entirely. The compilers attributed this loss to quarrying activity somewhere to the south-east, which has eaten into or disturbed that portion of the monument over time. The interior itself is level, a common feature of raths, which were typically built up from material scraped out of a surrounding fosse, or ditch, though no fosse is described here. The site also adjoins a second enclosure immediately to its south, recorded separately in the monuments record.

Ballybricken is a rural townland in County Limerick, and like most surviving raths this one sits in working farmland, which means access depends on the landowner's permission and the practicalities of the agricultural calendar. The monument is best appreciated by walking the perimeter slowly and watching for the change in ground level, particularly on the south-western arc where the bank is at its most pronounced. The eastern half of the circuit, where quarrying has done its work, rewards attention precisely because of its absence; the contrast between the surviving bank and the flattened eastern section makes the scale and original coherence of the enclosure easier to imagine.