The variation in these boundaries, some barely perceptible at twenty centimetres high, others rising to a more substantial bank of one point six metres to the southwest, gives the site an organic, accumulated quality, as though it was maintained and modified across a long period rather than constructed in a single effort.

Enclosures of this kind, a broad category in Irish archaeology, are generally understood as defined spaces set apart from the surrounding landscape, serving purposes that range from settlement and farmstead boundaries to ceremonial or ritual use. Without excavation it is rarely possible to say with confidence which function applied, or when. What can be observed at Knockadooma is that the interior slopes upward towards the centre and has been partially planted with trees to the east, while a ruined stone building sits just outside the bank to the southwest. That building, now collapsed, suggests some later activity in the vicinity, though whether it relates directly to the enclosure itself or simply occupies convenient ground nearby is not clear.

A laneway runs along the eastern edge, skirting the stone-faced field fence that forms that side of the boundary. For anyone approaching on foot, that eastern approach offers the clearest sense of the enclosure's scale, where the fence's external stone facing gives a more defined edge than the low, grass-covered rises elsewhere. The trees planted within the interior to the east provide some visual reference point for the centre of the site, which otherwise reads as a gentle, almost imperceptible rise across rough pasture.