The feature, recorded on Ordnance Survey maps under the name Dhuvcloy, takes the form of a substantial U-shaped depression, roughly 15.7 metres across and dropping between 0.9 and just over 2 metres in depth, with a bank running along its south-eastern side. Its full length is estimated at around 600 metres, though only about 450 metres of it remains visible on the ground today, the north-eastern section having been obscured by cropping and flattened by agricultural improvement.

What makes the Dhuvcloy quietly puzzling is not so much its physical form as its apparent purpose and direction. A scarp of this scale, a steep earthen edge cut or built into the ground rather than a wall or ditch, could represent many things: a boundary between territories, a managed routeway, or something more ceremonial. Cahill, writing in 1982, proposed that it is possibly an ancient boundary or trackway, and the alignment lends some weight to that reading. The feature curves around the base of Palmer's Hill and points directly towards the base of the Rock of Cashel, the great limestone outcrop that carries the ruins of one of medieval Ireland's most significant ecclesiastical and royal sites. The present Circular Road, which skirts the northern base of the Rock and continues south-west towards Hoare Abbey, a Cistercian house founded in the thirteenth century, appears to follow the same basic line. Whether the modern road is a descendant of the older feature, or simply a coincidence of topography, remains an open question.

The site sits within the townland of Charterschool Land, a name that itself carries a layer of history, referring to the network of Protestant Charter Schools established in Ireland during the eighteenth century. For anyone walking the Circular Road on the northern approach to Cashel, the Dhuvcloy runs somewhere beneath and alongside the tarmac, mostly invisible but occasionally readable in the field margins as a shallow, curving earthwork heading steadily for the base of the Rock.