Sometime between the mid-nineteenth century and the early twentieth, a feature that had endured long enough to be carefully mapped simply ceased to be visible. Today, the improved meadow and pastureland on the gentle south-facing slope gives no indication that anything was ever there.

What we know comes almost entirely from a single cartographic moment. The Ordnance Survey's six-inch map of 1842 records a circular enclosure roughly thirty metres in diameter, marked with hachures, the small radiating lines surveyors used to indicate an earthen bank or raised boundary. Enclosures of this kind are among the most common early medieval monuments in Ireland, typically the remains of a ringfort, a type of enclosed farmstead built and occupied broadly between the fifth and twelfth centuries. The 1915 edition of the same map series omits it entirely. The ground itself, now improved farmland, retains no visible trace. The enclosure sits approximately a hundred metres north of Ballyvelaghan Turlough, a turlough being a seasonally flooding lake characteristic of the karst limestone landscape of the Burren, which drains and refills through underground fissures as the water table rises and falls across the year. Whether the proximity to such a dynamic water feature had any bearing on the enclosure's eventual disappearance into the agricultural landscape is not recorded.