The ring-barrow at Knockballyfookeen is the kind of site that only reveals itself from above, a faint circular impression in the grass that has persisted for millennia without ever quite making it onto the official record.

A ring-barrow is a burial mound, typically of Bronze Age origin, consisting of a low central mound or platform surrounded by a shallow circular ditch known as a fosse. The example here has an external diameter of 10.3 metres and was first formally identified during the Bruff aerial photographic survey in 1986, catalogued as Bruff 92 (AP 4/3672). That survey image remains one of the clearest records of the site. Despite its apparent age, the monument was absent from historic Ordnance Survey Ireland maps, and it was only through orthoimages, aerial photographs processed to remove distortion, taken between 2005 and 2013 by OSi and Digital Globe, and later confirmed on Google Earth imagery from November 2018, that the site entered the archaeological record in any reliable way. The barrow sits 65 metres east of the townland boundary with Ballyshoneen, and is not isolated in the landscape: the ringfort known as Rathaniska lies just 90 metres to the southwest, and an as yet unclassified enclosure sits only 24 metres to the south-southwest. The clustering of these features suggests this corner of Limerick was a meaningful place across a long stretch of the past.

Because the site sits in private agricultural land and is not marked by any surface feature visible at ground level, visiting is largely a matter of knowing the coordinates and reading the landscape carefully. The fosse and central platform are most legible in low winter light or after a period of dry weather when soil moisture differences bring out the crop and grass marks. The record was compiled by Edmond O'Donovan and uploaded to the national monuments database in September 2020, which is the most accessible starting point for anyone researching the site in advance.