It does not appear on any official heritage layer in the conventional sense, yet aerial photography reveals its outline with quiet clarity, a shape that does not belong to the landscape around it and has no easy explanation attached to it.

The earthwork first came to light not through archaeological survey but through the practical business of infrastructure. Aerial photographs taken on the 3rd of November 1984 as part of the Bórd Gáis Éireann Curraleigh West-Limerick gas pipeline survey, recorded at a scale of 1 to 5000, captured the feature as a rectangular cropmark measuring approximately 75 metres north to south and 20 metres east to west. A cropmark, for those unfamiliar with the term, is a variation in the colour and growth of surface vegetation caused by buried features affecting soil moisture and depth, making buried walls, ditches, or enclosures visible from the air even when nothing survives above ground. A second survey, a Google Earth orthoimage dated 19th April 2019, confirmed the feature's presence and revealed an additional linear cropmark intersecting the southern end, running roughly east to west. That second mark may indicate drainage channels connected to land reclamation activity associated with the nearby Knocktoran House, though the relationship between the drainage works and the earlier rectangular feature remains unresolved.

Because the site survives only as a cropmark in reclaimed agricultural land, there is nothing to see at ground level in the conventional sense. The feature is best appreciated through the aerial and satellite imagery that first brought it to notice, particularly the Google Earth orthoimage from April 2019, when the cropmark definition was especially clear, likely due to seasonal soil conditions. Anyone with a serious interest in the site would do well to cross-reference the BGE aerial photograph reference 040269 alongside current satellite views, watching for the slight tonal difference in the grass that betrays the buried outline. Whether any future ground investigation will clarify what the rectangular enclosure originally was, whether a field system, an enclosure of earlier settlement, or something else entirely, remains an open question.