It measures roughly 5.7 metres north to south and 3.6 metres east to west, rising just over a metre at its highest point. Modest in scale, it would be easy to walk past without a second thought, yet it does not stand alone. Six further cairns are clustered within the immediate landscape, the nearest only seven metres to the south-west, the most distant about 120 metres to the west, and together they suggest that this hillside was once a place of some deliberate significance.

Cairns of this kind, broadly defined as intentional accumulations of stones, appear throughout prehistoric Ireland and are associated with a range of purposes, from burial and memorial to boundary marking. What makes this grouping at Garranes quietly compelling is the density of the cluster and its relationship to the surrounding landscape. Close by to the south lie relict field walls, the faint skeletal remains of an agricultural system long since abandoned, with further stretches of old field boundaries lying to the south-west and west. The conjunction of funerary or ritual monuments with the traces of former land use is not unusual in the Irish uplands, where thin soils and centuries of pasture have preserved features that lower, more intensively farmed ground long ago erased. No excavation record or dating evidence is noted for this particular cairn, so whether it belongs to the Bronze Age, which produced the majority of such hillside monuments in Munster, or to some other period, remains an open question.