In a 1971 aerial photograph, a sub-rectilinear cropmark appears, roughly fifty metres across on its longer axis and around twenty metres on its shorter, tracing a shape in the soil that the growing crop above has inadvertently preserved. Cropmarks form when buried features such as ditches or walls affect how plants grow overhead, leaving a faint but legible imprint for anyone looking down at the right moment of the season. What makes this one interesting is the question it refuses to answer cleanly: is the fosse, the ditch-like boundary, the ghost of something ancient that was later quarried away, or does it belong to the quarrying activity itself, a later boundary drawn around an industrial site?

The first edition Ordnance Survey six-inch map, surveyed in 1839, shows a quarry at this location, its outline broadly matching the cropmark's shape. At the north-western edge sits a limekiln, a structure used for burning limestone to produce quicklime for agricultural or construction purposes, and a trackway visible in the same aerial photograph appears to run directly towards it, suggesting the two were in use together. Whether the enclosure predates this industrial use or was created to contain it remains unresolved. The possibility that an older enclosure, perhaps prehistoric or early medieval, once stood here and was subsequently hollowed out by quarrying is plausible but unconfirmed. What adds further texture to the site is its immediate surroundings: four ring-ditches, the circular earthwork remains typically associated with Bronze Age burial mounds, lie within roughly forty to seventy-five metres of the quarry on various sides, clustering to the north and north-west. Their proximity raises the possibility that this small corner of the Kilkenny landscape was, at some earlier point, a place of some ceremonial or funerary significance.