153 sits within that remarkable cluster as a structure that has outlasted almost every human institution built since it was raised. Passage tombs are a specific form of megalithic monument in which a stone-lined corridor leads to a burial chamber, the whole typically covered by a cairn or earthen mound. What makes Carrowmore unusual is not any single tomb but the sheer density of the complex, and the way individual monuments like this one relate spatially to the larger satellite arrangement around the hilltop cairn of Knocknarea to the west.

The principal scholarly account of this tomb comes from Seán Ó Nualláin, whose survey of the megalithic tombs of County Sligo, published by the Stationery Office in Dublin in 1989, remains a foundational reference for the Carrowmore complex as a whole. Ó Nualláin's fifth volume of the Survey of the Megalithic Tombs of Ireland brought systematic documentation to a landscape that had seen earlier antiquarian attention but lacked a thorough modern record. Carrowmore had been noted by researchers as far back as the nineteenth century, and the tombs there have since been the subject of excavation and dating programmes that placed some of the complex's monuments among the earliest megalithic constructions in western Europe, with dates suggested in the range of the fifth millennium BC, though individual tombs vary and the chronology remains a matter of ongoing archaeological discussion.

The site is in State care and sits within a wider area managed for public access, so the general complex is approachable without special arrangement. The individual monument is best understood in relation to its neighbours, since the layout of Carrowmore rewards slow movement through the landscape rather than attention to any single point in isolation.