It shows up not as earthwork or stonework but as a cropmark, the kind of faint botanical trace left when buried ditches alter how soil retains moisture, causing the crops growing above them to ripen or stress at a slightly different rate than those nearby. The result, visible in satellite and aerial imagery, is a ghostly ring pressed into the landscape, detectable only when looking straight down.

The enclosure is defined by a double ditch, suggesting a more substantial original construction than a single-ditched ringfort, the circular enclosed farmsteads that were built across Ireland in their thousands during the early medieval period. A field boundary running across the southern side has partially cut through it, meaning the enclosure predates that boundary but was already invisible, or at least unremarkable, by the time the later field system was laid out. A possible entrance is visible at the northern side. The site was identified from Apple Maps imagery, with the observation credited to Jean-Charles Caillère.