It is easy to miss, partly because the bank defining it is so low. At its highest point, on the northern arc, the interior face rises only about 0.4 metres, and the exterior face is almost level with the surrounding ground, giving the whole structure the appearance of a slight thickening in the earth rather than any deliberate boundary.

The enclosure is roughly fifteen metres in diameter, its perimeter formed by a low bank of earth and stone about a metre wide at the top. What makes it quietly interesting is what survives inside: relict cultivation ridges, the faint corrugations left by old spade or plough work, cross the interior and continue into the surrounding field. These ridges suggest that the enclosed ground was once farmed, and that the enclosure itself predates at least some of the agricultural activity around it, or was integrated into it. A later field bank has since been built along the southern edge, cutting across the older form and hinting at successive phases of land use on this hillside. About 140 metres further downslope to the south, a second enclosure sits on the same gradient, suggesting this part of Kinknock Hill carried more structured human activity than its present rough-grazing appearance would imply.