They sit quietly at the southern foot of a mountain on the eastern side of the Clashduff river valley, aligned along a NNE-SSW axis and spanning less than five metres from end to end. That modest stretch contains a considerable amount of prehistoric intent: stone rows of this kind, typically two to six upright stones set in a deliberate line, are found across the uplands of Cork and Kerry and are generally understood to date from the Bronze Age, though their precise purpose, whether astronomical, ceremonial, or territorial, remains genuinely unresolved.

The three stones at Kilcaskan were recorded by Seán Ó Nualláin in 1988, and his measurements capture a subtle graduation in the row. The tallest stone stands at the north-east end, reaching just over a metre in height, while the other two stones, spaced at 1.8 metres and then 0.7 metres further along to the south-west, are slightly lower, at 0.85 metres and 0.9 metres respectively. All three are roughly similar in length and thickness. That the tallest stone anchors the north-east end is consistent with a pattern noted across many Cork and Kerry rows, where the stones often increase in height in one direction, suggesting the alignment was conceived as something more than a boundary marker or a convenience of the available rock.