Court tombs, sometimes called court cairns, are among Ireland's earliest megalithic burial monuments, typically dating to the Neolithic period and characterised by a semicircular or oval forecourt of standing stones that opens onto one or more roofed gallery chambers. The forecourt is thought to have served a ceremonial function, a communal space for ritual activity associated with the dead, which sets these structures apart from the simpler passage tombs found elsewhere on the island.

The tomb at Cloondaff is documented in the foundational survey of Mayo's megalithic heritage carried out by Ruaidhrí de Valera and Seán Ó Nualláin, whose two-man project to record the megalithic tombs of Ireland resulted in a county-by-county series published from the 1960s onwards. Their Mayo volume, published in 1964, remains a primary reference for monuments of this type across the county. Mayo has an unusually high concentration of court tombs relative to other Irish counties, a distribution that has long interested archaeologists trying to understand the movement of Neolithic farming communities across the island in the millennia before written record.