This is a five-stone circle, a type of monument particular to Munster in which a ring of upright stones, typically just five in number, is oriented along a deliberate axis. Of the original five, only four stones now survive, ranging from roughly 0.8 to 1.3 metres in length and reaching heights between 0.45 and one metre. The northern entrance stone leans heavily inwards, giving the circle a slightly tilted, time-worn quality. The internal span along the main axis measures just 2.3 metres, making this a compact arrangement even by the modest standards of the type.

What makes Canrooska particularly interesting is that the circle does not stand alone. It forms part of a small ceremonial complex, as understood by the archaeologist Seán Ó Nualláin, who catalogued it in 1984. A stone row, the kind of linear megalithic setting also found widely across Cork and Kerry, lies roughly four metres to the south. About eleven metres to the south-south-east sits a cairn, a mound of stones that in Irish prehistory typically marks a burial. The alignment of the circle itself runs northeast to southwest, an orientation commonly associated with solar or lunar events in the prehistoric calendar, though the precise significance remains a matter of scholarly debate. Taken together, the three elements suggest a place that was deliberately arranged and used, probably during the Bronze Age, for purposes that mixed ritual, commemoration, and perhaps the marking of time or season.