It appears on the 1837 Ordnance Survey six-inch map as a clear, embanked ring about forty metres across, the kind of feature that surveyors in that era recorded with reasonable confidence. By later map editions, it had vanished from the cartographic record entirely, and at ground level today there is nothing visible to suggest it was ever there.

The feature is tentatively identified as a rath, a type of circular enclosure defined by an earthen bank and ditch, common across Ireland from the early medieval period onwards and typically associated with farmsteads or small defended settlements. What makes this one quietly interesting is where it seems to have ended up. The northern portion of the original forty-metre circle may now lie beneath a walled burial plot used by the nuns of the adjacent convent, immediately to the west of St. Mary's Roman Catholic church. The 1919 Ordnance Survey map shows a slightly raised circular walled feature, roughly fifteen metres in diameter, sitting within that plot, its curved outline possibly echoing, or directly continuing, the arc of something far older underneath. The convent grounds, in other words, may have absorbed and partially preserved a pre-existing enclosure without anyone necessarily intending to do so.