These kinds of cropmark features, where buried ditches or banks cause overlying vegetation to grow differently, can betray the presence of a ringfort, enclosure, or other ancient boundary long after the physical structure has been levelled or absorbed into farmland. The circle here is clear enough in satellite photographs to suggest a deliberate and probably ancient construction, even if its precise function and date remain unconfirmed.

The feature was identified from a Google Earth image captured in July 2018, when conditions were apparently right for the outline to emerge. Cropmarks of this kind are often most legible during dry summers, when stressed vegetation above shallow subsurface features loses colour or height at a different rate to surrounding ground. Whether this particular enclosure is prehistoric, early medieval, or later in date is not yet established from the available evidence, but circular enclosures of around this diameter are commonly associated with ringforts, which served as farmsteads and defended homesteads across Ireland from roughly the fifth to the twelfth centuries.