The enclosure recorded at Inch St. Lawrence North is one such site, a trace of human activity so subtle that it went undetected until a camera mounted in an aircraft happened to pass overhead at precisely the right angle and season.

The monument was identified by The Discovery Programme, Ireland's state-funded archaeological research body, using medium-altitude aerial photographs taken in 1986. These images were later analysed and published as part of a broader regional study, the Ballyhoura Hills Project, documented by M. Doody in a 2008 monograph issued through the Discovery Programme's own series and published by Wordwell. That volume, covering pages 65 to 100 in its treatment of aerial evidence, catalogued a range of enclosures and related features across the Ballyhoura landscape, a hilly area straddling the Limerick and Cork border where archaeological fieldwork has repeatedly turned up evidence of dense prehistoric and early medieval settlement. The site is formally referenced as LI023: Bruff 226: AP 4/3740. An enclosure, in the archaeological sense, refers broadly to any defined area bounded by a ditch, bank, wall, or fence, and can date from the Bronze Age through to the early medieval period. Without excavation, the precise function and date of this particular example remain open questions.

Because the monument is known only from aerial photography, there is nothing obvious to see at ground level, and the field in question sits within an ordinary rural landscape north of Bruff in County Limerick. Aerial cropmarks, the phenomenon that made this site visible, appear when buried features affect how crops grow above them, and they are typically clearest from the air during dry summers when soil moisture differences become pronounced. Visitors with an interest in landscape archaeology may find it worth consulting the National Monuments Service record and the Doody monograph before making any trip, as the site is documented rather than signposted, and arriving without context leaves little to interpret.