That is, in a sense, the point. Somewhere beneath the pasture on a west-facing slope in County Cork lies what was once a rath, a type of circular earthen enclosure used as a farmstead during the early medieval period, roughly between the fifth and twelfth centuries. These were once among the most common archaeological features in the Irish landscape, numbering in the tens of thousands. The one at Coolguerisk has been levelled completely, leaving no visible surface trace.

The site is not entirely without a paper record. The Ordnance Survey's six-inch map of 1842 captured it as a circular enclosure approximately forty metres in diameter, which places it within the typical size range for a single-family rath. By the time that cartographic snapshot was taken, the enclosure may already have been under agricultural pressure; by now, whatever earthworks once defined its banks and ditches have been absorbed entirely into the surrounding field. The 1842 mapping is, in effect, the last reliable witness to its existence as a physical form.