Megalithic tombs, built roughly between 4000 and 2000 BC, served as collective burial places and likely as focal points for ritual activity among early farming communities. They range from the grand court tombs of the north and west to the more compact portal and wedge tombs found throughout Connacht, but which category this Drumsheen example belongs to is not currently known from available sources.

Mayo is unusually rich in megalithic remains, partly because the boglands that expanded across the west of Ireland after the Neolithic period have preserved evidence of early settlement and monument-building that was lost elsewhere to later agriculture and development. The Céide Fields complex, not far to the north, gives some sense of how densely this landscape was once organised by its earliest farming inhabitants, and a tomb at Drumsheen would fit into that broader pattern of Neolithic activity in the region. Beyond its location in that townland, the specific history of this monument, its form, condition, and any associated finds, remains, for now, unrecorded in publicly available sources.