It belongs to a category of archaeological traces known as cropmarks, a phenomenon in which buried walls, ditches, or foundations affect the growth of grass or grain above them. Where a filled-in ditch retains moisture, the vegetation tends to grow more lushly; where a buried wall impedes roots, it grows more thinly. The result, under the right conditions of drought and aerial light, is a ghostly outline of something long gone, readable only from above.

This particular enclosure came to light through analysis of Google Earth satellite imagery, its circular form emerging as a faint but legible shadow in the orthophotos. Circular enclosures of this general scale are a common feature of the Irish rural landscape from the early medieval period onward, often interpreted as ringforts, the remains of enclosed farmsteads in which a family or small community would have lived, their dwellings and outbuildings surrounded by an earthen bank or ditch. Whether this example fits that broad category or belongs to an earlier or later tradition cannot be said with certainty on the basis of a cropmark alone, but a diameter of around 44 metres north to south places it comfortably within the range typical of such sites. The site was identified through the work of Jean-Charles Caillère and compiled in 2021.