In a field of reclaimed pasture in Corelish East, County Limerick, an ancient enclosure was photographed from the air in 1986 and has not been reliably detected since. It belongs to that particular category of archaeological site that is easier to erase than to explain, visible one decade and gone the next, leaving nothing for the eye to catch at ground level.

The site came to light during the Bruff aerial photographic survey of 1986, recorded under reference Bruff 122: AP 3720. The survey identified a circular-shaped cropmark in the field, situated roughly 85 metres southwest of a small tributary stream and 220 metres southeast of the Mulkear River. A cropmark, for those unfamiliar with the term, is the faint but legible signature that buried archaeological features leave on growing crops or grass: buried walls or banks cause vegetation above them to grow differently from the surrounding soil, and these variations become readable from altitude. Circular enclosures of this kind are widespread across Ireland and can date from the prehistoric period through to the early medieval, though without further investigation it is impossible to say more about the age or function of this particular example. What is known is that by the time Digital Globe orthophotos were taken between 2011 and 2013, and again when Google Earth imagery was captured on 28 June 2018, no trace of the cropmark remained detectable. The site was compiled for the record by Alison McQueen and Vera Rahilly, with notes uploaded in July 2020.

There is little to see here in any conventional sense, and that is rather the point. The land sits in ordinary working pasture near the Mulkear River in County Limerick, and without the 1986 aerial photograph there would be no reason to pause. For anyone interested in how archaeology is recorded rather than excavated, this site is a useful reminder of how much depends on the right conditions: the right crop, the right season, the right angle of light, and a camera in the right place at the right time. The original aerial survey image remains the primary evidence, and consulting that alongside the later orthoimages gives a clear sense of how completely a site can retreat into the landscape.