What is known comes from a single aerial photograph taken in July 1989, in which the outline of a D-shaped enclosure briefly announced itself through the patterns of a growing crop.

Cropmarks form when buried features such as ditches or walls affect how plants grow directly above them. A filled-in ditch, richer in moisture and organic material, tends to produce taller, greener vegetation, while a buried wall can stunt growth. From the air, particularly during dry summers when these differences are sharpest, the ghost of a long-vanished structure can resolve itself with surprising clarity. In this case, the photograph revealed the fosse, meaning the enclosing ditch, of a D-shaped enclosure roughly fifty metres along its straight northern side, with the curved portion projecting westward. Two possible entrances were identified, one to the north-east and one to the south-west. What makes the site more intriguing is the cluster of linear cropmarks in the surrounding field, one of which crosses through the south-east quadrant of the enclosure itself, and another that runs eastward from the north-east corner. These lines suggest additional buried features, perhaps field boundaries, trackways, or drainage channels, whose relationship to the enclosure is not yet understood.

D-shaped enclosures are not common in the Irish record, and the form here, with its roughly north-south straight side and westward curve, does not fit neatly into the more familiar circular ringfort type that dominates the Cork landscape. Without excavation or further survey, dating and function remain open questions. The site sits quietly beneath whatever is now growing at Kilpatrick, waiting for conditions dry enough to show itself again.