At Cool in County Kerry, a univallate enclosure, meaning a single-ditched or single-banked enclosure of the kind commonly associated with early medieval settlement and farming, had already been reduced to a half before anyone thought to document it properly. By the time it appeared on the second edition of the Ordnance Survey map, a field fence had sliced away the south-western arc, leaving only the north-eastern portion still legible in the landscape. The original form was probably oval rather than circular, a distinction that can carry archaeological significance, oval enclosures sometimes reflecting earlier or more organically established boundaries than their neater circular counterparts.

The site lay on the western bank of a tributary of the Finglas river, at the foot of a steep south-east facing slope, a position that would have offered both drainage and a degree of natural shelter. It was recorded and described by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, an ambitious effort to catalogue the extraordinary concentration of field monuments across Corca Dhuibhne. Even at that point, the enclosure was a diminished thing, cropped by agricultural boundaries that cared nothing for what lay beneath. Since then, the process has gone further still: both the field fence that bisected it and whatever remained of the enclosure itself have now been levelled entirely. What was once a truncated monument is now no monument at all, present only in maps, measurements, and the sediment of the ground it once marked.