At Boherload in County Limerick, an enclosure of uncertain age and purpose falls precisely into this category. It was not discovered by a walker or a farmer turning the ground, but by someone studying aerial photographs, the outlines of a long-vanished structure revealing themselves as cropmarks or soil discolourations visible only from altitude.

The monument was identified by The Discovery Programme, a research body established to investigate Ireland's archaeological heritage, using medium-altitude aerial photographs taken in 1986. The findings were later published in Doody's 2008 monograph, The Ballyhoura Hills Project, part of the Discovery Programme Monograph series and produced by Wordwell. That volume drew together survey work across the Ballyhoura Hills region of south Limerick and north Cork, an area known to contain a dense concentration of prehistoric and early medieval remains. The Boherload enclosure is catalogued under reference LI022: Bruff 52: AP 4/3748. An enclosure, in the archaeological sense, typically refers to an area defined by a bank, ditch, wall, or palisade, and may have served as a settlement, a field boundary, a ceremonial space, or an enclosure for livestock, depending on its period and context. Without excavation, it is rarely possible to say which function applied.

Because this site was detected through aerial survey rather than surface investigation, there may be little or nothing visible on the ground today. The enclosure's outline is likely to have been ploughed flat or otherwise obscured over centuries of agricultural use. Visitors to the broader Boherload area, which lies within the parish of Bruff in south County Limerick, will find themselves in quiet, farmed countryside with few obvious markers pointing to what lies beneath. The value of the site is perhaps more conceptual than visual, a reminder that the Irish landscape holds many layers that only reveal themselves under particular conditions of light, season, and altitude. Anyone with a serious interest in the region's archaeology would do well to consult Doody's monograph, which places this record within a much wider survey of the Ballyhoura landscape.