The monument is a ditch barrow, a type of burial mound defined not by an earthen bank but by a surrounding fosse, or ditch, cut into the ground. Where a ring-barrow typically has a raised circular bank enclosing a central mound, the ditch barrow is defined primarily by that encircling cut, making it far less conspicuous at ground level. At roughly ten metres in diameter, this one is small enough to pass unremarked by anyone walking the field.

The monument was only formally identified in 1986, when the Bruff aerial photographic survey captured it from the air, recorded under the reference Bruff 84 and AP 4/3678. Seen from above, the site appeared as a small circular shape defined by its fosse, precisely the kind of subtle cropmark that ground-level inspection would almost certainly miss in a grazed and reclaimed landscape. Its existence was later corroborated by a Digital Globe orthophoto taken between 2011 and 2013, and again by a Google Earth image from November 2018. The site sits at the northern end of a north-south line of barrows, with two ring-barrows recorded some forty metres to the east and approximately one hundred metres to the south-east. The grouping suggests this corner of Kilduff was once a significant burial landscape, though the ditch barrow's absence from historical Ordnance Survey mapping means it accumulated none of the documentary attention given to more conspicuous monuments. The record was compiled by Fiona Rooney and uploaded in July 2020.

The site lies in working pasture, around fifty-four metres west of a stream and less than a hundred metres east of a conifer plantation, with the townland boundary with Garrison roughly two hundred and thirty-five metres to the south. There is nothing to see at ground level in any conventional sense; the fosse that defines it is not visible as an earthwork to the casual eye. Anyone curious enough to seek it out would do best to consult the aerial imagery available through the National Monuments Service record, where the circular outline becomes legible in a way the field itself simply does not allow.