The monument sits in farmland in Knocklong West, positioned 45 metres east of the townland boundary with Ballycahill and 95 metres west of the boundary with Knocklong, with a related earthwork recorded a further 225 metres to the south-east. It appears on no Ordnance Survey Ireland historic map, meaning it passed entirely unrecorded on paper for generations, known neither to cartographers nor, in any official sense, to archaeology.

The site came to light in 1986 during an aerial photographic survey carried out from Bruff, when the camera captured what analysts logged as a circular cropmark, reference Bruff 144, AP 5/2124. Cropmarks of this kind appear when buried features, a fosse or ditch, a buried wall, compacted soil, alter the growth rate of grass or grain above them, producing colour and texture differences that only become apparent when viewed from altitude, often in dry summers when the contrast is sharpest. The feature is classified as a possible ditch barrow, a type of funerary monument in which a low central mound is enclosed by a surrounding ditch or fosse. Subsequent satellite imagery confirmed its survival: a Digital Globe orthoimage taken between 2011 and 2013, and a Google Earth image dated 14 September 2019, both show the circular fosse still faintly readable on the ground. The record was compiled by Fiona Rooney and uploaded to the national monuments database in July 2021.

The site is on private farmland and there is no formal public access. Visitors with an interest in aerial archaeology or the wider prehistoric landscape of south County Limerick can view the Google Earth imagery online, where, with the right coordinates and a little patience, the faint ring is discernible. The best conditions for spotting cropmarks like this in the field, should access ever be arranged with a landowner, come during prolonged dry spells in late spring or summer, when differential growth in the pasture above the buried fosse is most likely to show itself. The monument carries the national record number LI040-227.