It has no standing walls, no interpretive sign, no path leading to it. What marks it out is that it was only recognised at all because someone happened to look down from the air at the right moment, in the right light, in the right season.

The enclosure was identified by The Discovery Programme, an Irish archaeological research body, using medium-altitude aerial photographs taken in 1986. Aerial survey of this kind works by catching cropmarks or soilmarks, the faint discolouration that buried ditches and banks can leave on the surface of a field, differences invisible at ground level but legible from above. The record of this particular monument appears in Doody, M. (2008), The Ballyhoura Hills Project, Discovery Programme Monograph No 7, published by Wordwell, with the specific reference LI022: Bruff 91: AP 4/3696. The Ballyhoura Hills Project was a systematic survey of the archaeological landscape across this part of Limerick and the adjoining counties, cataloguing sites that had never been formally recorded. An enclosure, in this context, generally refers to a defined area bounded by a ditch, bank, or wall, the category covers everything from early medieval farmsteads to prehistoric ritual sites, and without excavation it is rarely possible to say which applies.

Because the monument was identified from aerial photography rather than ground survey or excavation, there is currently no public access point or waymarked location. Visitors interested in the broader landscape would do well to consult the Ballyhoura Hills Project monograph itself, which provides detailed context for the region and its archaeology. The area around Bruff and the Ballyhoura Hills is well worth exploring at ground level, particularly in late spring or early summer when cropmarks tend to be most pronounced, though the enclosure at Skool will likely remain invisible underfoot. The National Monuments Service Sites and Monuments Record for County Limerick holds the formal entry, and that is probably the most practical starting point for anyone wanting to locate the monument precisely on a map.