This particular passage tomb, a National Monument in State care, is one among dozens clustered across the low limestone plateau, yet the sheer accumulation of evidence here continues to reshape what archaeologists understand about Neolithic burial practice and chronology in the west of Ireland.

A passage tomb is broadly what it sounds like: a stone-lined corridor leading to a chamber, the whole structure typically covered by a cairn of stone or earth. At Carrowmore, these monuments are generally simpler in construction than the great passage tombs of the Boyne Valley, yet radiocarbon dates obtained from the complex as a whole have suggested that some of the Carrowmore tombs may be among the earliest megalithic monuments on the island, pushing their origins back toward the early fifth millennium BC. The primary scholarly reference for this site is Seán Ó Nualláin's survey volume on County Sligo, published by the Stationery Office in Dublin in 1989, which remains the foundational catalogue of the megalithic tombs of the region and documents the individual monuments with measured detail.