What makes this site quietly unusual is its layered structure: aerial photography has revealed evidence of a central enclosure sitting inside a larger, sub-circular enclosure, one contained within the other, suggesting this was not a casual or incidental feature of the landscape.

The site is recorded under Ordnance Survey reference OS 9, 2271, and was compiled by archaeologists Geraldine Stout and Padraig Clancy, with a revised entry dating to July 2018. Enclosures of this kind, essentially bounded areas defined by banks, ditches, or walls, are found across Ireland in a wide range of periods and contexts, from prehistoric farming settlements to early medieval ringforts. The presence of a nested arrangement, one enclosure within another, is less common, and tends to attract attention from those working in landscape archaeology. The platform on which it sits appears to be a natural feature of the slope rather than an artificial construction, which means whoever chose this location was selecting ground that already offered a degree of elevation and aspect, looking south over the valley below.

Kilmashogue Mountain falls within the Dublin Mountains, accessible from several trailheads to the south of Rathfarnham. The enclosure itself is not signposted or formally managed as a heritage site, so finding it requires some orientation against the OS map reference. Vegetation and bracken on the hillside can obscure earthwork features, particularly in summer when growth is dense; late autumn or winter, when the ground cover is low, offers a clearer view of any surviving banks or irregularities in the terrain. The south-facing aspect means the slope catches reasonable light on a clear day, which can help pick out subtle differences in ground level that aerial photographs often reveal more readily than ground-level observation.