What it replaced, however, is a different matter entirely. Beneath the later stonework lies the memory of something considerably older: an earthen rath, the circular embankment characteristic of early medieval Irish settlement and enclosure, which once defined the limits of this burial ground before it was tidied away into more conventional form.

The detail comes from the antiquarian W. F. Wakeman, writing in 1892, who recorded that the cemetery had originally been enclosed by one of these earthen ringworks before the present stone boundary wall was built in its place. Raths, sometimes called ring-forts, were among the most common features of the early Irish landscape, typically serving as farmstead enclosures during the early medieval period, though their association with burial and sacred ground is also well documented. The fact that this one was repurposed as a graveyard boundary, and then quietly replaced, means that the site carries several layers of use compressed into what now appears to be a fairly unremarkable suburban churchyard.

The graveyard sits just off Killiney Hill Road, reached by taking Marino Avenue West heading east. It is the kind of place that rewards a slow look rather than a quick pass. The stone boundary wall itself, recorded in the Sites and Monuments Record under the reference DU026-013008, is the most legible surviving feature. There are no dramatic ruins clamouring for attention here, which is part of what makes it worth the detour; the interest is stratigraphic, lodged in what came before the wall that now stands, and in the quiet persistence of a boundary line that has, in one form or another, marked this ground for a very long time.