In the townland of Gorteennacreeagh in County Limerick, a parcel of ordinary pasture sits close to the boundaries with Knockainey West and Rathanny, and somewhere within that grass lies what may, or may not, be the faint outline of a prehistoric or early historic enclosure. The uncertainty is, in its own way, the point.

The site came to attention during the Bruff aerial photographic survey of 1986, catalogued as Bruff 66 (AP 5/2075). Aerial surveys of this kind work by detecting cropmarks, the differential growth of grass or grain above buried features, where buried ditches retain moisture and produce lusher growth, and buried walls or compacted surfaces starve roots and produce paler, thinner crops. The 1986 image appeared to show a possible enclosure, the kind of roughly circular or oval boundary ditch that characterises a ringfort or similar early settlement feature across much of Munster. A possible pond feature was also noted on the same image. However, when later satellite orthoimages were examined, including Digital Globe imagery from between 2011 and 2013 and Google Earth imagery from a comparable period, no surface trace could be identified at all. The record, compiled by Fiona Rooney and uploaded in June 2021, carries the cautious designation "doubtful antiquity," meaning the feature may reflect a natural or agricultural irregularity rather than any human construction.

For anyone who makes their way out to this corner of south County Limerick, the site is located approximately 23 metres west of the Knockainey West townland boundary and 20 metres north of the boundary with Rathanny, set in pasture with no visible surface remains to speak of. There is nothing to see in the conventional sense, and that is worth knowing before you go. What the site offers instead is a small lesson in how archaeology actually works at its quieter edges, where a single aerial photograph raises a question that decades of subsequent imagery cannot resolve either way. The Bruff survey image, with its cropmark labelled Bruff 66, remains the sole evidence, sitting in the record alongside the blank of the later orthoimages.