The stones do not march in a neat procession; they wander, which is part of what makes them difficult to categorise. Formally classed for years as a stone alignment, a designation usually reserved for deliberately arranged ceremonial rows, the feature has since been reclassified as gallauns, a term for standing stones that carries fewer assumptions about intent or arrangement.

The line runs eastward from the cairn, keeping about 20 metres south of the old parish boundary between Killiney and Ballinvoher, which is itself marked by a disused east-west wall running directly north of the cairn. At least sixteen stones are involved, some still upright, others prostrate. The uprights range from 0.4 metres to 1.58 metres in height, and the recumbent slabs from 0.85 to 2 metres in length. Notably, the stones decrease in size from west to east, with the tallest stone at the western end bearing a small cross carved into its southern face. Whether that cross is ancient or a later addition is not recorded. Judith Cuppage, writing in 1986, noted that the stones might have formed part of a boundary wall, or might be connected in some way to the cairn itself, a structure locally known as Cuchullin's House or Tigh Chúchulainn, associating it with the great warrior of Irish mythology. The cairn is one of two sitting roughly 1.6 kilometres apart along the same east-west ridge, this being the larger and more westerly of the pair.

The ambiguity is the real point of interest here. A line of stones that decreases in size toward a cairn, with a cross cut into its tallest stone, resists easy explanation. It could be a practical boundary marker repurposed or absorbed into something older; it could be a prehistoric monument that later served an administrative function. The ridge setting, separating two distinct valley systems, suggests the boundary itself may be far older than any cartographic record.