What makes it quietly curious is precisely that ambiguity: cartographic evidence from two different centuries points in two different directions, and the feature on the ground has not yet resolved the question. Earthworks of this kind are recorded using hachures on Ordnance Survey maps, short lines drawn down the slopes of a feature to suggest its shape and relief, and the 1897 edition of the OSi 25-inch map shows one clearly, sitting immediately beside the castle.

The earlier OSi 6-inch map, surveyed around 1840, offers a possible clue to what came before. At roughly the same location, it depicts what appears to be a pond feature, which raises the possibility that the earthwork visible in the later survey is the remnant of that earlier water feature, perhaps a managed pond associated with the castle's domestic or agricultural use. Ballyculhane Castle itself is a recorded monument, and ponds or water management features attached to castle complexes were not unusual in medieval and early modern Ireland, sometimes serving fishponds, millponds, or simply as ornamental or practical water sources. Aerial photographs taken by the Archaeological Survey of Ireland in March 2006 record the site from above, and more recent orthoimagery from Digital Globe and Google Earth, covering the period 2011 to 2018, shows the area as tree-covered ground, the canopy now obscuring whatever earthen form lies beneath. The record was compiled by Caimin O'Brien and uploaded in February 2021.

The site sits on private land in rural Limerick, and there is no formal public access. The tree cover that conceals it on satellite imagery would make ground-level observation difficult even if access were possible. Those with a serious interest in the site would do well to consult the Archaeological Survey of Ireland database entry for Ballyculhane Castle alongside this associated earthwork record, where the aerial photographs and orthoimagery provide the clearest available view of the feature. The surrounding landscape, typical of this part of Limerick, is quietly agricultural, and the castle itself provides the main visual landmark by which to orientate.