At thirty-two metres in diameter, it is modest in scale, but its basic geometry, a roughly circular enclosure defined by a scarped edge and an outer ditch, is still legible in the landscape despite centuries of agricultural use and encroaching vegetation. The interior surface is uneven, gently sloping down to the north-east, with slight humps and hollows that suggest the ground beneath holds more than it presently reveals.

A rath, or ringfort, is an early medieval enclosed settlement, typically dating from roughly the sixth to the tenth century, built as a farmstead and defined by one or more earthen banks and ditches. The Cappagh example sits on a north-east facing slope among outcrops of limestone, a setting that would have offered reasonable drainage and natural stone close to hand. The enclosing elements here include a scarped edge running from south-south-east around to the north-east, accompanied by an external fosse, the shallow ditch that would once have reinforced the boundary, running from the south-east around to the west-south-west. The bank itself, where it survives and is visible, rises to around 0.85 metres on its outer face. A slight lowering of the scarp on the southern side is interpreted as a possible original entrance. The record was compiled by Denis Power and uploaded in August 2011.

The site sits in working pasture, so access is likely to depend on the landowner's permission, and the ground underfoot will be uneven. The north-east to east-south-east arc of the enclosure is obscured by dense overgrowth, meaning the clearest view of the surviving earthworks comes from the south and south-east, where the bank and scarp are most distinct. The limestone outcrops in the surrounding area are worth noting as you approach; they give the hillside a particular character and help explain the slight unevenness of the terrain throughout the interior. Look for the subtle change in the scarp height near the south, where the possible entrance once lay.