The Ordnance Survey Ireland maps, which catalogued so much of the Irish landscape in careful detail, never recorded this ring-barrow at all. It took an aerial camera, pointed at the ground from above in 1986, to confirm what the surface of the land had been quietly holding.

A ring-barrow is a burial monument of prehistoric origin, typically consisting of a low central mound or flat area enclosed by a circular ditch, known as a fosse, and sometimes a low outer bank. The example at Ballynagally, identified during the Bruff aerial photographic survey of 1986 and catalogued as Bruff 31 (AP 4/3668), measures roughly eleven metres in external diameter. It sits within a remarkably dense concentration of related monuments: five further ring-barrows and a ditch-barrow lie within 110 metres to the south and east, and two additional ring-barrows are positioned immediately adjacent, one just ten metres to the north and another only three metres to the north-east. The Glenatrahaun Stream runs 125 metres to the east, forming the boundary between the townland of Ballynagally and its neighbour, Coologe. The site was compiled by Edmond O'Donovan and uploaded to the record in September 2020, though aerial orthoimages from both Ordnance Survey Ireland (2005 to 2012) and Digital Globe (2011 to 2013), as well as Google Earth imagery from November 2018, all confirm the monument's presence to anyone who looks carefully enough at the landscape from above.

Because the monument sits on working reclaimed pasture, there is no formal public access and nothing is formally marked or managed on the ground. The features are subtle at field level, a slight depression and a barely perceptible outer bank, and would be easy to overlook entirely without prior knowledge of what to look for. The most useful approach for the curious is through aerial imagery; the Google Earth orthoimage from 18 November 2018 shows the ring-barrow and its neighbours with reasonable clarity. Anyone with a serious research interest should consult the National Monuments Service record directly, where the full cluster of monuments is logged under the LI024 series.