Court tombs, sometimes called court cairns, are among the earliest megalithic monuments built in Ireland, typically dating to around 4000 BCE or earlier. They are characterised by a roofless semicircular or oval forecourt formed by upright stones, opening into one or more roofed gallery chambers where the dead were placed. The forecourt is thought to have served a ceremonial function, perhaps for rituals associated with the ancestors, making these structures as much about the living as the dead.

The tomb at Cartronplank is documented in Seán Ó Nualláin's Survey of the Megalithic Tombs of Ireland, Volume V, which covers County Sligo and was published by the Stationery Office in Dublin in 1989. Ó Nualláin's county-by-county survey remains a foundational reference for understanding the distribution and condition of these monuments across Ireland, and Sligo itself contains a remarkable concentration of megalithic tombs, of which Cartronplank forms a quiet and less celebrated example. Court tombs are found predominantly in the northern half of Ireland, and their clustering in counties like Sligo, Mayo, and Donegal reflects patterns of early Neolithic settlement along fertile lowland corridors and river valleys.