Most early enclosures in Ireland are roughly circular, so a hexagonal example is unusual enough to warrant a second look. Roughly forty metres across in both its north-south and east-west dimensions, it is defined by a low bank, the kind of earthen boundary that can read as little more than a grassy ridge at ground level, yet resolves into something deliberate and structured when seen from above.

What makes the site stranger still is its relationship to later administrative geography. A townland and barony boundary, running on a north-west to south-east axis, cuts directly through the middle of the enclosure, bisecting it cleanly. Townland boundaries in Ireland are famously ancient, often fossilising much earlier territorial or landholding divisions, and the fact that this one slices through rather than skirts around the enclosure suggests a complicated layering of time. The enclosure was presumably already old, perhaps long abandoned, when whoever drew that boundary line did so, and its original extent was simply divided between two administrative units without ceremony. The enclosure sits within a broader field system on the hillside, hinting that this corner of Knockaunsmountain was once a worked and organised landscape, though what the hexagonal enclosure itself was used for, whether as a stock pen, a settlement boundary, or something else entirely, remains an open question.