It is the kind of monument that repays attention precisely because so little has been made of it: an oval mound defined by a gentle scarp, grass-covered and unassuming, the sort of feature a passing walker might mistake for a natural rise in the ground.

The monument was surveyed by the Archaeological Survey of Ireland in 2008 and recorded as an oval-shaped area measuring roughly 5.25 metres north-northeast to south-southwest and 7 metres west-northwest to east-southeast. Its defining feature is a low scarp, between 1.5 and 1.8 metres wide and standing only 0.35 to 0.45 metres high, encircling a grass-covered interior. A barrow, in the archaeological sense, is a burial mound or earthwork of prehistoric origin, often associated with funerary ritual, and this example belongs to the ring-barrow tradition, in which a central area is enclosed by a circular or oval bank or scarp. A related ring-barrow lies 170 metres to the northwest, suggesting this corner of Garravin may have once formed part of a wider funerary or ritual landscape. Despite its apparent significance, the monument does not appear on Ordnance Survey Ireland's historic mapping series, and its survival into the present is documented chiefly through aerial ortho-imagery, including images captured between 2005 and 2012 and a Google Earth image from June 2018, compiled by researchers Alison McQueen and Vera Rahilly.

The site sits 135 metres northeast of the townland boundary with Brackloon, in ground that the survey notes describe as wet pasture, so stout footwear is advisable at most times of year and near-essential in winter and spring. The earthwork is most easily appreciated from above, as the aerial images demonstrate, but at ground level the scarp is perceptible as a distinct change in elevation around the oval perimeter. A dry land drain running roughly west-northwest to east-southeast passes to the north, channelling water toward a pond some 40 metres to the west-northwest. These drainage features are worth noting as reference points when trying to orient yourself on what is otherwise a largely featureless stretch of agricultural land.