The one at Knocknamucklagh in County Kerry follows that familiar pattern in some respects, but its surviving complexity rewards closer attention. Where many examples have been reduced to a single eroded bank, this one retains two earthen banks, an intervening fosse, and traces of an outer fosse, giving a clearer than usual sense of how seriously the original builders took the business of definition and defence.

A rath, as this type of enclosure is also known, is essentially a ringfort constructed from earth and sod rather than stone. The Knocknamucklagh example sits on a south-east-facing slope in pasture, measuring roughly 33.5 metres north to south and 33 metres east to west. The inner bank stands just 0.3 metres high on its interior face but rises to 1.15 metres on the exterior, a modest but deliberate asymmetry. Between the two banks runs a fosse, a cut or dug ditch, approximately 2.2 metres wide and still traceable all the way around the circuit. The outer bank, about 3.4 metres wide, survives best to the north and north-west, while a slight slope to the south and west marks where the outer fosse once ran. One detail that speaks to centuries of agricultural continuity is the presence of numerous cattle gaps cut through the inner bank; the enclosure has long since been absorbed into working farmland. A two-metre-wide internal ledge running around the base of the outer bank's interior face is a subtler feature, and its original purpose is not entirely clear. A possible entrance, roughly three metres wide through the inner bank and about 1.6 metres through the outer, sits at the south-south-east, which would have faced the open slope and any approaching visitor or animal.

The interior itself slopes downward to the south-east and is uneven underfoot, which may reflect the collapse of internal structures over time or simply the natural lie of the ground. A field boundary runs along the northern arc, tracing the outer bank closely enough to suggest that later generations found the old earthwork a convenient ready-made boundary, a pattern seen at many such sites across Ireland.