Passage tombs are a specific form of megalithic burial architecture in which a stone-lined corridor leads inward to a central chamber, the whole structure typically covered by a round cairn or earthen mound. What makes the Carrowmore complex so unusual is less any single monument than the sheer density of them, arranged across open farmland beneath the shadow of Knocknarea to the west, where the unexcavated cairn of Miosgán Médhbha crowns the hilltop.

The tomb recorded here as National Monument No. 153 forms part of the broader Carrowmore grouping documented by Seán Ó Nualláin in his Survey of the Megalithic Tombs of Ireland, Volume V, covering County Sligo, published by the Stationery Office in Dublin in 1989. Ó Nualláin's survey remains a foundational reference for the monuments of this region, cataloguing their forms, conditions, and relationships to one another. The passage tombs at Carrowmore have attracted archaeological attention since the nineteenth century, with Swedish excavations in the 1970s and 1980s producing radiocarbon dates suggesting some of the simpler boulder circle and dolmen combinations here may date to around 4000 BCE or earlier, placing them among the earliest megalithic constructions in Atlantic Europe.

The Carrowmore complex is managed as a visitor site and is accessible during the summer months, with a small visitor centre near the main cluster of monuments. The tombs sit in open fields, and several are viewable at close range along marked paths, giving a reasonable sense of their scale and spacing across the landscape. The relationship between the individual monuments and the hilltop cairn on Knocknarea becomes clearer from within the site than from any map or photograph.