This one in Rathmore North, County Limerick, leaves no such trace above ground. What exists here is essentially a ghost, visible only from the air and only under the right conditions: a circular cropmark pressed into improved pasture roughly 220 metres west of the Camoge River, which itself marks the boundary between Rathmore North and the neighbouring townland of Meanus. A cropmark of this kind forms when buried features, say the filled-in ditch of an ancient enclosure, affect how vegetation grows above them. Crops or grasses over a buried ditch tend to grow taller or greener, because the disturbed soil retains more moisture, and from altitude that difference in growth reads as a faint outline of whatever structure once stood there.

The enclosure was not recorded on any historic Ordnance Survey Ireland maps, which means it went unnoticed through the entire period of systematic Irish cartographic surveying. Its existence came to light only because of an infrastructural project with no archaeological ambitions whatsoever. An aerial photograph, catalogue reference BGE 1:5000 No. 44, taken on 3 November 1984 as part of a survey associated with the Bórd Gáis Éireann Curraghleigh to West Limerick gas pipeline, captured the circular cropmark by chance. Decades later the mark was confirmed again on an Ordnance Survey Ireland orthophoto taken sometime between 2006 and 2012, and on a Google Earth image dated 5 April 2020. By September of that same year, a later Google Earth image showed no surface remains whatsoever. A second, separate enclosure, recorded as LI031-036, lies approximately 340 metres to the northwest, suggesting this corner of Limerick may have been more densely settled in the past than the current unremarkable pasture implies. The site was compiled by Martin Fitzpatrick and uploaded to the record in March 2021.

There is nothing to see at ground level, and that is rather the point. The land presents itself as ordinary improved farmland, the kind that stretches across much of lowland Limerick. The cropmark that betrays the enclosure is clearest from aerial imagery taken in dry summers, when differential moisture retention in the soil becomes most pronounced. Anyone curious enough to examine the Google Earth archive can compare the April 2020 image, where the circular outline is legible, against the September 2020 image, where it has disappeared entirely. The Camoge River nearby provides a useful orientation point, running along the eastern edge of the townland. The site sits on private farmland with no formal access, so satellite imagery remains the most practical means of engaging with it.