This is an earthwork of barely perceptible scarp, the kind of feature that rewards deliberate looking rather than accidental discovery. Its oblong arc sits atop the ridge like a parenthesis left open, and the fact that it remained legible enough on a 1937 Ordnance Survey six-inch map, rendered in hachures, the short parallel lines cartographers use to indicate sloping ground, suggests it once had considerably more presence than it does today.

What makes the spot particularly interesting is the company it keeps. Immediately to the east lies Shanbally Fort, a separate but neighbouring monument, and just north of the earthwork's southern scarp stands a standing stone. Standing stones in Ireland are notoriously difficult to date with precision, but their association with boundaries, ritual sites, and earlier prehistoric monuments is well established. Whether the stone here was raised in relation to the arc, or simply occupies the same ridge for reasons now unrecoverable, the clustering of features suggests this elevated ground held some significance across a long span of time. Ploughing over generations has done its work on the scarp, leaving only the ghost of whatever enclosure or boundary once marked the hilltop.