No earthen banks survive, no ditches, no obvious trace of the circular enclosure that once stood here. The only evidence of its existence is a ghostly outline that appears in aerial photographs, visible not as a physical structure but as a difference in how crops grow above it.

This kind of evidence is known as a cropmark. When the buried remains of an ancient ditch or bank lie beneath a field, the soil above retains moisture and nutrients differently from the surrounding earth, causing the crops overhead to grow at a slightly different rate or to a slightly different height. From the air, and under the right conditions, that difference resolves into a recognisable shape. In this case, a circle, the characteristic form of a ringfort, the type of enclosed farmstead that was the basic unit of rural settlement in early medieval Ireland, roughly between the fifth and twelfth centuries. On 16 July 2006, Michael Moore photographed this particular cropmark from the air, preserving a record of something that had otherwise left no mark on the visible landscape.