At roughly 28 metres in diameter, it is the kind of monument that rewards patience and a certain willingness to read a landscape carefully, because much of what once defined it has been absorbed, demolished, or buried under its own rubble.

Circular enclosures of this type are among the most common prehistoric and early medieval monument forms in Ireland, used variously as ringforts for agricultural settlement, as burial enclosures, or as cattle pounds, though without excavation it is rarely possible to say which purpose any individual example served. At Moylisha, the surviving fabric tells only part of the story. Along the western to northwestern arc, a rubble wall still stands between 0.8 and 1 metre high and up to 1.6 metres wide, its face reinforced with a revetment of upright slabs and small boulders set to hold the loose material in place. To the southeast, the line of the enclosure continues as little more than a scatter of loose stones and boulders. The southwestern stretch has been swallowed into later field boundaries, a fate common to monuments that happened to sit where a convenient line of stone could be repurposed. More damaging still, the northeastern boundary was at some point deliberately demolished, and the spoil from that clearance was tipped into the interior of the enclosure itself. There is no surviving trace of an external fosse, which would normally be a defining feature of a defensive or agricultural ringfort, and no identifiable entrance or internal features remain visible.