This one is remarkable for what has not. In the townland of Inchacoomb in County Limerick, a roughly circular earthwork once sat in reclaimed pasture about 140 metres east of the River Aherlow, which forms the boundary with the neighbouring townland of Ballyfauskeen. The enclosure, approximately 25 metres in diameter, was the kind of feature that archaeologists call a ringfort or enclosed settlement, a circular earthen boundary that would once have defined a farmstead or place of habitation, likely in the early medieval period. By the time anyone thought to record it systematically, it was already on its way out of existence.

The Ordnance Survey's six-inch map of 1840 shows the monument clearly, a roughly circular earthwork sitting in the landscape as it had for centuries. But by the time the same area was surveyed again for the 25-inch edition of 1897, the enclosure had disappeared from the record entirely. The gap between those two surveys, a period of agricultural improvement, land clearance, and the reorganisation of Irish farming in the decades following the Famine, appears to have been enough time for the monument to be levelled. Whether this was deliberate or simply the consequence of ploughing and drainage work is not recorded. What is certain is that by the late nineteenth century, it was gone. Aerial photography and satellite imagery from the early 2010s, examined by researcher Martin Fitzpatrick who compiled the record in October 2021, confirm that no surface trace whatsoever remains visible today.

There is, in practical terms, nothing to see at Inchacoomb. The field where the enclosure once stood looks like any other patch of reclaimed pasture in this part of Limerick, and no earthwork, crop mark, or surface feature distinguishes it from the surrounding land. The value of visiting, if one were inclined to do so, would lie entirely in the act of knowing what the landscape once held and no longer shows. The River Aherlow runs nearby, and the broader Glen of Aherlow is a landscape with considerable archaeological depth. For those interested in the quieter side of the historical record, places like this, documented absences rather than surviving monuments, are a useful reminder of how much has simply been farmed away.