Wedge tombs take their name from their characteristic shape: a gallery that narrows and lowers from front to back, typically oriented with the wider, taller entrance facing broadly west or south-west. They are the most numerous type of megalithic tomb in Ireland, yet individual examples can be remarkably easy to overlook, often reduced over millennia to a few large stones settled quietly into farmland or rough pasture.

The primary scholarly record for this tomb comes from Seán Ó Nualláin's survey of the megalithic tombs of County Sligo, published in 1989 as the fifth volume in a national series. Ó Nualláin's systematic work across the county documented the distribution and condition of monuments that had, in many cases, received little formal attention. Sligo is a county with an unusually dense concentration of prehistoric monuments, from the passage tomb complex on Carrowmore to court tombs scattered across the drumlin country, and the Culleens wedge tomb sits within that broader prehistoric landscape. Beyond its inclusion in Ó Nualláin's volume, the specific structural details of this particular tomb, its dimensions, the number of surviving orthostats, and its precise state of preservation, are not available here in enough detail to describe with confidence.