The field boundary running along the northern edge curves noticeably, bending away as though whoever laid it out did not want to disturb what was already there. That kind of deference, a modern boundary yielding to a prehistoric one, is easy to overlook, but it speaks to how persistently these old enclosures impose themselves on a working landscape.

A ringfort, or rath, is a roughly circular enclosure defined by one or more earthen banks and ditches, built during the early medieval period, broadly between the fifth and twelfth centuries, and typically associated with a farmstead or the residence of a local family of some standing. This particular example was recorded by the archaeologist Seán P. Ó Ríordáin in 1933, who noted that the lios, the Irish term for such an enclosure, measured 45 yards in diameter, and that part of a double rampart survived on the north side. A double rampart, two concentric banks rather than one, suggests the enclosure was considered worth the additional effort of construction, possibly indicating higher status or a greater need for security. The site sits on a south-facing slope in pasture, with a slight rise marking where the enclosure lies, and it is the kind of feature that registers more clearly when the light is low and the grass is short.