On the northern bank of the Glashanagark River in County Limerick, an oval mound once significant enough to be recorded on the Ordnance Survey's six-inch map of 1923 has since proved impossible to locate on the ground. The mound measured approximately ten metres east to west and five metres north to south, dimensions modest enough to describe a feature that could easily be a burial cairn, a ringfort remnant, or even a naturally occurring rise given cultural significance over time. Whatever it was, it is now either gone or thoroughly disguised.

The site sits within undulating pasture at Mounttrenchard, a landscape characterised by gradual rises and dips in the natural terrain. When surveyor Denis Power compiled the record in 2011, the area had undergone many local changes in gradient, the kind of subtle reshaping that comes from decades of agricultural activity, drainage works, and soil movement. In such conditions, a low earthen mound of only a few metres across would be among the most vulnerable of features. The Ordnance Survey map from 1923 remains the clearest evidence that something was once here, a formal cartographic record of a feature that later observers could not confirm with any confidence.

The Glashanagark River provides a useful navigational reference for anyone curious enough to visit the general area, and the northern bank is accessible through the surrounding farmland, though permission from landowners should be sought as a matter of course. The undulating ground does at least lend a certain interest to searching, since every gentle rise invites a second look. The honest expectation, however, is that nothing obviously mound-like will present itself. What makes this site worth knowing about is precisely that absence, the gap between a map's confident mark and what the land now offers in return.