On a gently west-facing slope of ordinary pasture, roughly 300 metres south-west of the Barnakyle River and 200 metres north-west of Elmpark House, the outline of a substantial circular enclosure lies flush with the ground, invisible to anyone walking across it. No bank breaks the grass, no ditch catches the eye. The monument exists, for practical purposes, only from the air.

The enclosure was identified not by fieldwork but by the patient examination of aerial photographs, specifically 1:10,000 Ordnance Survey Ireland imagery, reference OS5 740, Nr 0686. What the photographs revealed was the outline of a roughly circular area defined by a bank, measuring approximately 70 metres north to south and 62 metres east to west, with a trace of bank running north-east from the eastern side and what appears to be a rectangular annexe or secondary enclosure immediately to the west. A Digital Globe orthophoto taken between 2011 and 2013 confirmed these details, and the outline remained clearly legible on Google Earth imagery captured between 2009 and 2019. Crucially, neither the 1840 Ordnance Survey six-inch map nor any subsequent OS mapping records this feature at all, which means it escaped systematic documentation entirely during the long era of ground-level survey. A second, smaller enclosure or possible barrow sits approximately 100 metres to the north-west, recorded separately under the reference LI012-163. The site was compiled by Fiona Rooney and uploaded to the record in June 2020. A barrow, in this context, is a prehistoric burial mound, though the precise function of this enclosure remains unclassified.

Because there are no surface remains visible, a visit to the field itself would tell you very little without foreknowledge of what you are looking at and why. The real experience of this site is one step removed, encountered through the Google Earth orthoimages that brought it to light in the first place. Locating the enclosure on those images, tracing the faint circular cropmark against the surrounding pasture, and then considering that it sat unrecorded through nearly two centuries of mapmaking is the thing that makes this place worth knowing about. The land around Elmpark House is private, and the monument has no public access or signage, but its presence in the national monument record means it is now, at least, known to exist.