The only way to read it is from the air, where differences in how crops grow over buried or disturbed soil reveal the ghost of an old enclosure, roughly D-shaped, with what appears to be a larger annexe or field boundary extending from its southern side. Cropmarks of this kind form when buried features, such as ditches or walls, affect the moisture and nutrients available to the plants above them, causing subtle but visible variations in growth and colour during dry spells. The result is a kind of accidental X-ray of the landscape.

The marks at Ballydowling were captured in aerial photographs taken in July 2006. The D-shaped plan is a form commonly associated with early medieval settlement in Ireland, where a roughly circular or half-circular earthen enclosure, sometimes called a ringfort or rath, would have defined a farmstead and its immediate surroundings. The attached annexe, if that is what it is, may point to an associated garden, paddock, or secondary enclosure, though the cropmark alone is not enough to confirm function or date with any precision. What the photograph does confirm is that something deliberate and substantial was once built here, even if the surface today gives no sign of it.