Stone rows, a prehistoric form in which upright stones are set in deliberate linear sequence across a landscape, are found in some concentration across Cork and Kerry, and this example at Keilnascarta sits on a gently south-facing slope, modest and unannounced in the surrounding grassland. What gives the arrangement a slightly unsettled quality is the northeast stone, which leans markedly to the south, as though caught mid-fall. When upright, it would have stood only 1.3 metres tall, the smallest of the three.

The row is aligned roughly east-northeast to west-southwest. The northeast stone is the most slender, just 0.15 metres thick, and its lean suggests some ground movement or disturbance over the millennia since it was placed. Moving southwest, the next stone stands 1.6 metres high and sits 2.8 metres from the first; the final stone, 1.3 metres further along, is the broadest of the group at 1.2 metres in length and also reaches 1.6 metres in height. What makes the Keilnascarta site particularly interesting in a wider sense is its relationship to neighbouring monuments. A pair of standing stones lies 50 metres to the north-northwest, and a second pair sits around 100 metres to the south-southeast. Whether these groupings were conceived together, or accumulated across generations of prehistoric activity in the same stretch of ground, is not recorded, but their proximity suggests this was a landscape that people returned to, and marked, more than once.