This one, in a field of pasture in Clogher East, Co. Limerick, has the more unsettling quality of appearing and then disappearing from the historical record entirely. It was noted on the Ordnance Survey's six-inch map of 1840 as a semi-circular earthwork roughly twenty metres in diameter, its bank curving from south through west to north, open on the eastern side. By the time the OS returned to produce the twenty-five-inch edition in 1897, it was gone from the map altogether. Whether that means the feature was levelled, obscured, or simply judged unworthy of inclusion is no longer clear.

The uncertainty runs deeper than that. Whoever recorded it for the 1840 survey may have been marking a genuine early earthwork, but there is a competing explanation: an OS spot height was taken at this precise location and shown on that same map, raising the possibility that the semi-circular shape was connected to the surveying process itself rather than to any ancient construction. That ambiguity gives the site the slightly vertiginous quality of a question mark drawn in the landscape. What makes it worth attention, despite everything, is its immediate context. A possible moated site, a form of enclosed medieval settlement typically consisting of a raised platform surrounded by a water-filled ditch, lies just to the north-west, recorded separately in the Sites and Monuments Record. A watercourse marking the townland boundary with Rathcannon runs about a hundred metres to the north. That clustering of features, even uncertain ones, is the kind of thing that rewards a careful look at the wider area.

On the ground today there is, by all accounts, very little to see. Orthophotography taken between 2005 and 2012 recorded no visible surface remains. The site's most legible trace appears in Google Earth satellite imagery, where a possible cropmark suggests that something beneath the soil is still influencing how the grass grows above it. Cropmarks of this kind, where buried banks or ditches affect moisture retention and produce subtle differences in vegetation colour, are often most visible in dry summers when the contrast is sharpest. The site sits in ordinary agricultural pasture, with no public access implied by the record, and is of interest mainly to those following the wider pattern of earthworks and possible medieval settlement in this part of Limerick.