That detail, a view down the throat of a chamber built perhaps five thousand years ago, is quietly arresting. Court tombs are among the oldest megalithic monuments in Ireland, typically consisting of an open forecourt, a roofed stone gallery divided into chambers, and the whole assembly originally buried beneath a long cairn of stone and earth. At Carrowleagh, the outline of that cairn is still readable on the ground, its edges marked now by a contrast between grass and dry fern litter rather than by any upstanding kerb.

The principal scholarly account of this monument comes from Ruaidhrí de Valera and Seán Ó Nualláin, whose Survey of the Megalithic Tombs of Ireland, Volume II, covering County Mayo, was published by the Stationery Office in Dublin in 1964. That volume remains one of the foundational references for megalithic archaeology in the west of Ireland, systematically cataloguing monuments that might otherwise have drifted further into obscurity. Court tombs as a class are concentrated in the northern half of the country, and Mayo holds a considerable share of them. They belong to the early Neolithic period, associated with the first farming communities to settle Ireland, and their forecourts are generally understood to have served some ceremonial or communal function, possibly connected with the deposition of the dead or with ritual activity among the living.