What survives at Clonickilvant is barely enough to read as a monument at all: an oval earthwork roughly 25 metres across at its longest, its enclosing bank worn almost flat to a scarp on its western and northern sides, its surrounding ditch reduced to a whisper of a depression at the south-southwest. From the air, the whole thing resolves into a cropmark, the kind of faint oval that aerial photography picks out when soil moisture and grain growth conspire to betray buried features beneath a field that looks, from the ground, entirely unremarkable.

Ringforts, known in Irish as raths when they are earthen-banked enclosures of this kind, are among the most common early medieval monuments in Ireland, typically associated with farming settlements of the first millennium AD. They were built to enclose a homestead, the bank and external fosse (or ditch) providing a degree of security for people and livestock alike. The Clonickilvant example is small even by the standards of the type, and its interior carries a few intriguing details noted during fieldwork between 1970 and 1972. A large stone sits just inside the bank on the south-eastern side, and a small piece of rock protrudes from the bank itself nearby. Running from that outcrop across the interior in a roughly east-southeast to west-northwest line, a slight scarp may represent the remains of an internal partition, dividing the enclosed space in a way that suggests something more structured than a simple open yard. The original entrance is uncertain, though the northern side is considered a possibility. The monument had already been recorded as an oval-shaped earthwork on the revised Ordnance Survey 25-inch map of 1913, confirming it was at least partly legible a century ago, even as the intervening decades have continued to erode it.

The site sits on a slight rise with open views in all directions, which would have been a practical advantage to any early medieval household keeping watch over livestock or approaching strangers. That elevated position is now the clearest indication that something deliberate was once placed here.