An oval earthwork, roughly 55 metres by 50 metres across, with a surrounding ditch and what appears to be an internal bank running within, is almost entirely invisible at ground level. It was not a local historian with a shovel who found it, but an aerial photograph, the kind of oblique image that catches low sunlight and transforms faint undulations in a field into something legible.

The site was identified through the Bruff Survey, a systematic programme of aerial reconnaissance and mapping that covered this part of Limerick, and was recorded on Map 23 of that survey. The enclosure appears in aerial photographs catalogued as Bruff 95.1, 95.2, and AP 4/3678. The archaeologist Doody, writing in 2008, described the feature and noted that its morphology, meaning the overall shape and structure of the earthwork, is consistent with Bronze Age enclosures. A ditched enclosure of this type, roughly circular or oval, was a common form of monument during the Bronze Age, a period broadly spanning from around 2500 to 500 BC in Ireland, and examples have been identified across the country through exactly this kind of aerial survey work. The record was compiled by Denis Power and uploaded to the national Sites and Monuments database in November 2013.

This is not a site with a visitor path or an interpretive panel. Because it survives primarily as a cropmark or soilmark, the enclosure is most readable from above rather than from standing beside it, and even on the ground the ditched outline may be difficult to distinguish depending on the season and the state of the land. Cropmarks tend to show most clearly in dry summers, when differential moisture retention in the soil causes crops over buried features to grow at a different rate to those in undisturbed ground. Anyone visiting the Kilduff area should be aware that the land is privately farmed, and the enclosure has no formal public access. The real experience of this place is, in a sense, archival, consulting the aerial photographs themselves and appreciating how much of prehistoric Ireland remains unexcavated, uninterpreted, and quietly waiting beneath ordinary fields.