Measuring roughly 30 metres north to south and 27 metres east to west, it is not especially large, but its proportions and construction suggest it has been sitting quietly in this landscape for somewhere in the region of three to four thousand years.

The enclosure was identified not by a field survey on foot but through the examination of aerial photographs, specifically those gathered as part of the Bruff Survey and referenced as AP 5/2073 on Map 40. The aerial view, recorded by the Archaeological Survey of Ireland in January 2003, revealed the outline of a ditched enclosure, the kind of feature that tends to flatten into near-invisibility at ground level but reads clearly from above as a distinct crop or soil mark. Archaeologist Doody, writing in 2008, described a ditch approximately five metres wide, with a gap or disturbance on the western side, and traces of an earthen bank surviving on the eastern and southern edges. Perhaps most intriguing is the suggestion that the interior may once have functioned as a raised platform, which, combined with the overall shape and scale of the monument, points toward a Bronze Age date. Enclosures of this type, oval or roughly circular with an internal raised area, are known from the Bronze Age period across Ireland, sometimes interpreted as ceremonial spaces or enclosed settlement sites, though the function of any individual example is rarely straightforward to determine.

Because this site was identified from the air rather than investigated on the ground, there is no excavation data to consult, and the feature is not signposted or developed for visitors in any way. It lies in agricultural land in Knockainy West, a townland in the Bruff area of south County Limerick, and any trace of the earthwork visible at surface level will depend heavily on the season, the crop cover, and the direction of low raking light. Winter or early spring, when vegetation is thin, offers the best conditions for reading subtle changes in the ground. The aerial photographs held by the Archaeological Survey of Ireland under reference ASIAP 349/17 remain the clearest record of what survives here.