This ditch barrow in Ballynamona went entirely unrecorded on Ordnance Survey Ireland's historic maps, invisible at ground level among the improved pasture and the tangle of land drains that cut across the landscape. It took a low-level aircraft to find it.

The monument was identified during the Bruff aerial photographic survey in 1986, appearing as a small circular earthwork in survey image 231.03. A ditch barrow is a burial mound defined not by a raised bank but by a surrounding fosse, the term used for a ditch or moat-like enclosure cut into the ground, which gives the monument its outline. Once spotted from the air, it proved surprisingly legible: subsequent orthoimages, including those taken by Ordnance Survey Ireland between 2005 and 2012, by Digital Globe between 2011 and 2013, and by Google Earth as recently as March 2017, all show the circular form clearly. Two related ditch barrows, recorded separately, lie 62 metres and 105 metres to the south-east, suggesting this part of Ballynamona was once a focus of funerary activity. The site sits 305 metres north-west of the public road that also marks the townland boundary with Castlefarm. The record was compiled by Alison McQueen and Vera Rahilly and uploaded in November 2020.

There is no formal access to this monument, which lies in private agricultural land well away from any road. The ground is described as wet pasture, and the surrounding drains and watercourses make the approach difficult. One old ditch or drain running north-east to south-west appears to bisect the barrow itself on modern imagery, a reminder that farming activity has been gradually encroaching on the form. For anyone with a particular interest in aerial archaeology or funerary landscapes, the satellite and orthoimage record held through the national monuments database is currently the most practical way to examine what survives.