Most walkers would pass it without a second glance. What makes it worth pausing over is the gap between what it once was recorded as and what it has since become.

The 1834 edition of the Ordnance Survey six-inch map, one of the great feats of early nineteenth-century cartography in Ireland, marked this spot in gothic lettering as a "fort", the convention used to signal an ancient enclosure of some significance. At that time it was legible enough as a distinct structure, roughly twenty metres in diameter. By the time the 1907 edition was produced, the same feature had been reduced in the surveyors' eyes to a barely perceptible kink in a field boundary at the north-west. In other words, within roughly seventy years, an earthwork that had once warranted formal acknowledgement had been absorbed so thoroughly into the working landscape that it was almost indistinguishable from an ordinary field bank. A fosse, which is a defensive ditch typically encircling an enclosure of this kind, still leaves faint traces on the eastern and southern sides, hinting at the original plan of the site.