The enclosure itself is modest, around sixteen metres in diameter, and what remains of its boundary is a combination of an earth-and-stone bank and a scarped, or cut, edge where the ground has been shaped to define the perimeter. Neither element is particularly dramatic in height, rising less than a metre above the surrounding pasture, but together they describe a circle that has endured in this limestone landscape for well over a thousand years.

Ringforts, known in Irish as raths when formed from earthworks, were the most common form of rural settlement in early medieval Ireland, typically enclosing a farmstead and its associated buildings between roughly the fifth and twelfth centuries. The rath at Ardgoul North follows the general pattern: a roughly circular enclosure defined by raised banks, set into gently undulating pasture in an area where limestone outcrops through the soil. The record was compiled by Denis Power and uploaded to the national sites database in August 2011. The western boundary of the enclosure is marked by a dry-stone wall that separates it from an adjacent orchard and farmhouse, meaning the ancient and the domestic are divided by little more than a single course of stacked stone.

The site is partially obscured by overgrowth along the northern arc, from roughly north-northeast around to the west, and the interior slopes downward toward the northeast, where vegetation has also taken hold. Visitors approaching across the pasture will find the scarped edge most legible on the southern and south-southwestern side, where the ground has been cut most clearly. The limestone terrain in this part of County Limerick can make for uneven footing, particularly after rain, and the enclosure sits within what appears to be active farmland, so any visit should be made with appropriate consideration for land access. The concrete platform to the east is an unavoidable presence, though it does nothing to diminish the quiet persistence of the earthwork beside it.