The rath at Quarryhill survives only in part, and that partial survival is itself the story. On an east-facing slope in low-lying grassland, roughly 32 metres in diameter, the site retains two banks with an intervening fosse, the shallow ditch between them that would once have formed a continuous defensive boundary, but only along a curving arc running from the south-west through north to north-east. Beyond that arc, the enclosing elements have been entirely lost to the construction of farm buildings, leaving just a fragment of what was once a complete circuit.

Raths of this kind were the everyday settlements of early medieval Ireland, typically dating from roughly the fifth to the twelfth centuries. A family or small community would have lived within the enclosed space, protected by banks and ditch from both livestock strays and less welcome visitors. The circular form was not ceremonial; it was practical. At Quarryhill, that practical landscape has been quietly overwritten by later agricultural use, the farmyard expanding to claim the very ground the rath once occupied. What remains is enough to identify the site's original shape and scale, but only just.