Roughly eight metres across, it registers only from the air, where a change in the grass betrays a buried boundary invisible to anyone walking the wet pasture above it. No edition of the Ordnance Survey six-inch maps ever recorded it, and at ground level it leaves no trace whatsoever, not a raised lip, not a depression, not a discolouration that the eye could catch.

A ring-ditch is the buried remnant of a circular enclosure dug in prehistoric times, often associated with funerary or ritual activity. Over centuries, the original cut fills with sediment and organic material, which retains moisture differently from the surrounding soil. That differential shows up in aerial photographs as a crop mark or a parch mark, a ghostly ring pressed into the surface from below. This particular example came to light not through documentary research but through a field inspection followed by analysis of aerial photography, where the circular form appeared clearly despite leaving no imprint on the landscape that a person on foot could detect. A closely related feature of the same type lies almost immediately to its south, the two sitting side by side in the gentle roll of the Tipperary farmland like paired impressions from something long erased.