Roughly 200 metres long and gently curving, it was not discovered by excavation or local tradition but by an aerial photograph taken in April 1974, in which the outline of a banked trackway became visible from the air in a way that remains entirely invisible at ground level.

Aerial photography has long been one of archaeology's quieter tools. Differences in soil moisture, crop growth, or grass colour can reveal buried features, walls, and routeways that leave no surface trace, a phenomenon sometimes called a cropmark or soilmark. In this case, the photograph showed the road delineated by a bank on either side, curving across gently undulating terrain that also incorporates a low hillock. At the time the photograph was taken, the field was partly under grass and partly under tillage, and it is likely that contrast between those two surfaces helped make the buried feature legible from altitude. Nothing about the road's age or purpose has been recorded; it could belong to any number of periods in which Irish rural landscapes were crossed by managed trackways, from early medieval times onward.

What makes this site quietly compelling is precisely its invisibility. There is no marker, no exposed stonework, no worn path to follow. The road is simply there, under the soil, curving around a small rise in the Tipperary countryside, waiting for conditions, perhaps another dry summer and another pass overhead, to make itself known again.