The one at Knockroe, in the Kenry barony of County Limerick, is not among the most dramatic examples, but it rewards a careful look precisely because of what time and agriculture have done to it. The enclosing bank still reads clearly along its south-eastern to eastern arc, but heading eastward it has been levelled almost entirely, and at the east and south-east the surviving earthwork is cut off by later field boundaries that converge at a point just outside the enclosure. The result is a monument that survives in fragments, its outline only partly legible in the landscape.

The site sits on a north-east-facing slope in an area where limestone breaks through the surface, and that geology shapes the experience of being there. The sub-circular interior measures roughly 32.6 metres north to south and 30.5 metres east to west, dimensions consistent with a moderately sized rath of the kind associated with a single farming household rather than a high-status enclosure. Where the earthen bank does survive, it stands around 0.9 metres high on the exterior face and only about 0.3 metres on the interior, the differential suggesting reasonable original construction even if subsequent levelling has reduced the overall effect. The interior itself is uneven, with the southern half sloping gently downward to the north-east while the northern half drops away more steeply in the same direction. Survey details were compiled by Denis Power and uploaded to the record in August 2011.

The interior is under pasture, so the ground underfoot is grass rather than scrub, and exposed bedrock breaks through the surface in several places, a reminder of how close the limestone lies beneath. Visitors approaching from the east will find the monument easiest to read from the south-western side, where the bank is most intact and the enclosure's curve is clearest against the slope. The truncated eastern edge, where field boundaries have absorbed or overwritten the original earthwork, is worth examining closely as an illustration of how working farmland gradually reshapes prehistoric and early medieval features over centuries without ever quite erasing them.