Cairns of this kind are not burial monuments or territorial markers but clearance cairns, low mounds built up from stones lifted off the land to make fields workable. They are the most ordinary of archaeological features, the residue of agricultural labour rather than ritual intention, yet their sheer number here, fourteen clustered on the eastern side of Canroe alone, gives some sense of how intensively this small island was once worked.

Beginish sits in the northern reach of Valentia Harbour, close enough to Church Island that at certain low tides a sand-bar connects the two. The high ground of Canroe carries a settlement complex of considerable density: eight houses, eight animal shelters, and an extensive network of fields and walls, along with the fifteen cairns. An iron smelting site lies at the island's western end, suggesting a community engaged in more than subsistence farming. The complex was excavated in the early 1950s by M. J. O'Kelly, whose published report of 1956 remains the primary account of the site. One cairn, located roughly 55 metres north-east of what the excavators designated House 6, was fully opened. It measured 3.5 metres in diameter and half a metre in height. No finds were recovered from it, which is consistent with its probable function: it was simply somewhere to put the stones.