That invisibility at ground level, combined with its legibility from the air, is precisely what makes it interesting. It is the kind of feature that slips through the documentary record entirely, leaving aerial and satellite imagery as the primary means of establishing that it was ever there at all.

The enclosure sits on gently undulating ground at the base of Knockderc Hill, roughly 620 metres southeast of St Patrick's Well, along with an associated church and graveyard. It lies immediately south of a ringfort, a type of circular earthwork enclosure common across early medieval Ireland, typically used as a defended farmstead. The relationship between the two features is suggestive, if not conclusive. The enclosure itself is rectangular, measuring approximately 22 metres on its north-northeast to south-southwest axis and 35 metres east-southeast to west-northwest, and is described in the archaeological record as an annexe, a term used when a secondary enclosure appears to adjoin or relate to a primary one. A relic field boundary, meaning an old boundary that no longer functions in the current landscape, cuts across the northern end of the enclosure and is also visible some 5 metres south of the ringfort. The site sits about 25 metres west of the townland boundary with Kilcullane, which is marked on the ground by a small southward-flowing stream. The record was compiled by Edmond O'Donovan and uploaded in November 2020, drawing on aerial photographs from 2002 and satellite imagery captured across multiple dates between 2005 and 2020.

At ground level, in what is now ordinary reclaimed pasture, there is little to orient a visitor. The enclosure does not announce itself through upstanding earthworks or obvious surface disturbance. The most useful approach is to study the aerial and satellite images beforehand, available through Google Earth and the Ordnance Survey Ireland orthophoto archive, so that the faint cropmark or soil-mark pattern becomes something you are actively looking for. The proximity to the Patrickswell church and graveyard cluster provides a useful landmark. Summer months, when differential crop growth or soil moisture is more likely to register as a visible mark in overhead imagery, are generally when such features show most clearly from the air, though the site has appeared across multiple seasons in the recorded images.