It is only when you get above them, as an aerial survey did in July 1989, that the ground begins to speak. Photographs taken during that survey revealed a fragmented but coherent pattern of rectilinear cropmarks, some running perpendicular to each other, spread across an area of roughly five hectares. Cropmarks form when buried features such as old walls, ditches, or banks affect how vegetation grows above them, producing faint stripes and shapes that become legible from the air even when nothing visible remains on the surface. What emerged at Killuragh was the ghostly outline of a relict field system, a whole organised landscape of enclosures and boundaries that had quietly vanished beneath the soil.

The aerial photographs revealed more than just field boundaries. Nested within the system are at least three further features: a circular enclosure, a possible second enclosure, and a ring-ditch. Ring-ditches are typically the eroded remains of prehistoric burial monuments, most often Bronze Age barrows, where the surrounding ditch survives as a faint circular scar long after any mound above it has been ploughed flat. Their presence alongside field boundaries suggests this five-hectare patch of north Cork may preserve a layered landscape in which farming, settlement, and funerary activity overlapped across a considerable stretch of time. The full chronology of the system remains uncertain, as cropmark evidence alone rarely yields firm dates, but the combination of organised rectilinear fields with these internal features points to a community that shaped this ground with some deliberateness.