That conjunction, where the enclosure's levelled scarp appears to meet and perhaps merge with an oval mound measuring around 8 metres by 6 metres, is obscured by dense overgrowth, leaving the precise relationship between the two features genuinely unresolved. It is the kind of ambiguity that tends to accumulate quietly in Irish fields, where centuries of agricultural reshaping can blur the boundary between what was built at one time and what came before or after.

An enclosure of this type, defined by a scarp, the term for an earthen slope or bank cut into the ground surface, would in many Irish contexts be associated with early medieval settlement or land management, though no firm date is assigned here. What makes the Rathbrit site a little more complex is that it does not stand alone. A fosse, an earthen ditch running broadly south-west to north-east, is shared with a neighbouring enclosure to the north, suggesting the features were either planned together or at some point integrated into a common boundary arrangement. A further D-shaped enclosure sits approximately 10 metres to the west-south-west, adding to a cluster of earthworks that implies sustained, layered activity in this small area. When the Ordnance Survey recorded the site on its six-inch map of 1840, it depicted the enclosure as a circular area with a diameter of around 20 metres, noticeably smaller than the dimensions recorded on the ground today and a reminder of how surveying conventions and subsequent fieldwork can produce quite different pictures of the same place.