It exists as a small circular cropmark on a single aerial photograph, taken on 3 November 1984, and has left no trace on the ground that any later satellite image has been able to detect. The field has been reclaimed as pasture, the surface smoothed over, and whatever lies beneath has been quietly absorbing the seasons ever since.

A barrow is a prehistoric burial mound, typically earthen, raised over the remains of the dead and sometimes enclosing chambers, grave goods, or cremated bone. This particular example, recorded as Site No. 040234, came to light not through excavation or fieldwork but through an incidental consequence of infrastructure. When Bord Gáis Éireann was planning the Curraleigh West to Limerick gas pipeline, aerial photographs were taken along the route at a scale of 1:5000. In one of those images, a faint circular mark appeared in a field roughly 400 metres southwest of Ballincolloo House. Cropmarks of this kind form when buried features, whether ditches, walls, or pits, affect how crops or grass grow above them, producing patterns that are invisible from the ground but readable from the air under the right light and conditions. The site is not depicted on any Ordnance Survey Ireland historic map, which suggests it had already faded from the landscape long before systematic mapping began. A second possible barrow lies approximately 15 metres to the northwest, assigned its own separate record, and the proximity of the two raises the possibility that this was once part of a small funerary grouping. The record was compiled by Martin Fitzpatrick and uploaded in June 2021.

There is nothing to see at this location in the conventional sense. The field shows no surface remains on Google Earth, and without access to the original pipeline aerial photographs, the cropmark itself is not readily viewable. The value here is less in visiting than in understanding how much of the Irish archaeological landscape survives in exactly this condition, present in a photograph taken during an unrelated survey, unrecorded before and largely invisible after, sitting in ordinary pasture with no marker, no signage, and no particular reason for a passing eye to pause.