Others exist only as a faint shadow pressed into the earth, visible not to the person walking across the field but to someone looking down from above. The enclosure at Fedamore, in County Limerick, belongs to this second category. It was not discovered by an archaeologist digging in the soil or by a local farmer turning a plough; it was spotted from the air, its outline emerging as a crop mark or soil discolouration in aerial photographs taken in 1986. That kind of ghostly visibility, there in one light and gone in another, is its defining quality.

The site was identified by The Discovery Programme, an Irish research organisation established to apply systematic, scientific methods to the study of the country's archaeological landscape. The specific photographs that revealed the enclosure were taken at medium altitude in 1986, and the record sits within the Ballyhoura Hills Project, a major survey published in 2008 by Muiris Doody as Discovery Programme Monograph No 7. An enclosure, in archaeological terms, is broadly any defined area set off from its surroundings by a bank, ditch, wall, or some combination of these features; they appear across Irish history in many forms, from prehistoric ceremonial sites to the fortified farmsteads known as ringforts that were common in the early medieval period. The Fedamore example carries the reference LI022: Bruff 88: AP 4/3699, a cataloguing code that ties it to a specific aerial photograph and survey grid. Beyond what the photograph revealed and what the project recorded, the details of date, function, and original form remain open questions.

Because the enclosure is known primarily from aerial evidence rather than ground investigation, there is little to see at the surface, and the precise location within the Fedamore area would require consulting the Discovery Programme records or the Sites and Monuments Record held by the National Monuments Service. For anyone with a particular interest in landscape archaeology, the Ballyhoura Hills Project monograph itself is worth seeking out; it covers a wide swathe of south Limerick and north Cork and sets individual sites like this one into their broader regional context. The best conditions for spotting crop-mark sites like this from the ground, if any trace remains visible at all, tend to come during dry summers, when differential moisture in the soil picks out buried features in the growing vegetation above them.