That is more or less all that remains to be seen, and even that much requires a knowing eye. There are no earthworks, no ditches, no banks. The site at Ballynagar holds interest precisely because of what has vanished, and because the evidence for what was once there survives only in old cartography rather than in the ground itself.

The 1838 edition of the Ordnance Survey six-inch map recorded a subcircular enclosure here, set within an enclosed mixed tree plantation on the hillock. By the time the 1925 edition was surveyed, the enclosing element of the plantation was no longer shown, and at some point the trees were removed entirely. A rath, the Irish term for a ringfort, was a circular earthwork enclosure typically used as a farmstead during the early medieval period, roughly between the fifth and twelfth centuries. Thousands were built across Ireland, and their siting on low rises in agricultural land is a well-recognised pattern. The Ballynagar hillock fits that pattern closely enough that its identification as a probable rath, while unconfirmed, is far from speculative. Whatever earthworks once defined the enclosure have since been ploughed or eroded away, leaving the landscape reading as ordinary farmland with an unusually level summit.