Its existence is known from a single aerial photograph taken in 1986, and without that image it would, in practical terms, have vanished completely.

The site sits roughly 115 metres north of the townland boundary between Garryheakin and Arrybreaga, in a stretch of agricultural grassland that has been improved over many decades, a process that flattens, fills, and otherwise erases subtle earthworks with quiet efficiency. When a survey aircraft flew over the area in 1986 as part of the Bruff aerial photographic survey, the resulting image, catalogued as Bruff 104 (AP 4/3620), showed what specialists identified as a ring-barrow. A ring-barrow is a low circular burial mound, typically from the Bronze Age or Iron Age, defined by a surrounding ditch and sometimes an outer bank, and usually covering a cremation or inhumation burial at its centre. Some forty metres to the north, further possible barrows have been recorded separately, suggesting this part of Garryheakin may once have held a small funerary landscape of some kind. By the time Ordnance Survey Ireland produced orthophotography of the area between 2005 and 2012, no surface remains were visible, and a Google Earth image captured on 18 November 2018 confirmed the same. The monument was compiled into the archaeological record by Martin Fitzpatrick and uploaded in April 2021.

For anyone drawn to places where the archaeological record exists almost entirely as an abstraction, this is an instructive case rather than a rewarding field visit. The field itself is working pasture, and there is nothing to see at ground level. The aerial photograph held under the Bruff survey reference is the closest a person can get to the monument as it once appeared. What the site does offer, to those interested in how ancient landscapes are detected and lost, is a useful reminder that much of what is known about prehistoric Ireland survives only in the gap between one photograph and the next ploughing season.