This one in Duntryleague, County Limerick, leaves no visible mark on the ground at all. The earthwork exists, effectively, only in a single set of aerial photographs, taken on the 3rd of November 1984 during a survey conducted ahead of the Bórd Gáis Éireann Curraleigh to West-Limerick gas pipeline. Without that industrial project, and the aerial camera mounted above reclaimed pasture on an autumn morning four decades ago, the feature might never have entered the archaeological record at all.

The photographs, catalogued under reference BGE 1/5000 2583 and assigned Site No. 049220, captured the earthwork as a cropmark, the faint differential in vegetation growth that can betray buried features to an eye trained to read them from altitude. Cropmarks appear when buried walls, ditches, or banks affect how grass or crops grow above them, producing subtle variations in colour or texture invisible at ground level. The Ordnance Survey Ireland six-inch maps, compiled in the nineteenth century and considered a remarkably thorough record of the Irish landscape, carry no trace of this feature, suggesting it was already buried and forgotten before that survey was conducted. By the time Digital Globe captured orthoimages of the area between 2011 and 2013, and later still on Google Earth imagery, the earthwork had left no surface impression whatsoever. Reclamation of the surrounding pasture had seen to that. A separate linear cropmark running northeast to southwest, visible to the south of the site, turns out to be something rather more recent: a relic field boundary that does appear on the 1840 edition of the OSi six-inch map, placing it firmly in the post-1700 landscape.

For anyone curious enough to visit the Duntryleague area, the honest answer is that there is nothing to see at the site itself. The surrounding landscape, in the south of County Limerick, has its own quiet interest, and the broader Duntryleague townland sits in farming country that has been worked and reworked over centuries. The earthwork's sole legible form remains the 1984 aerial photograph, compiled into the record by Fiona Rooney and uploaded to the national sites database in September 2021. It is, in a sense, a place that exists more fully in an archive than on any ground you could walk across.