Its defining bank, six metres wide but rising no more than eighty centimetres above the ground in places, would barely register to a casual walker. Yet the geometry is deliberate and ancient, a circular enclosure thirty-eight metres across, with an outer fosse, a ditch dug to throw up the bank material, running around the outside. A gap facing roughly north-east, five metres wide, marks what was once a formal entrance. What makes the site a little more intriguing is a secondary enclosure attached at the south-west, a level subcircular area about thirty metres across, possibly bounded by its own fosse. Whether this was a contemporary annexe for animals, a later addition, or something else entirely is not clear from the surface evidence.

Raths, also called ringforts, are the most common field monument in Ireland, with estimates running to tens of thousands of surviving examples. They were typically the enclosed farmsteads of early medieval families, dating broadly from the fifth to the twelfth centuries, surrounded by earthen banks that offered a degree of security for livestock rather than any serious military defence. The Kilmurry example is modest in scale, and no internal features are visible today, meaning whatever structures once stood inside, wooden posts, a hearth, a souterrain perhaps, have long since disappeared into the soil. A spring lies immediately to the north of the enclosure, a detail worth noting given that proximity to a reliable water source was a practical consideration for anyone choosing a place to settle. A later field boundary running north-west to south-east cuts across the south-west sector, evidence that the land was reorganised at some point after the rath fell out of use, with the older monument simply absorbed into a newer agricultural pattern.