Boulder-burials are among the least understood monuments in the Irish prehistoric landscape: a substantial, often glacially deposited stone placed deliberately over a burial, with no surrounding kerb or megalithic chamber to announce its purpose. They are easy to walk past, easy to mistake for a natural feature of the land, which may be part of why so few people could name one unprompted.

As a monument type, boulder-burials are found mostly in the south and west of Ireland, and are generally associated with the Bronze Age, though dating individual examples is difficult without excavation. The form is deceptively simple: a large flat-bottomed or rounded boulder, sometimes propped slightly above the ground, beneath which cremated remains or grave goods may have been deposited. Their distribution across the western seaboard suggests they belonged to local burial traditions that ran parallel to, rather than inside, the more architecturally elaborate megalithic customs of the Neolithic. The example at Carrowmoremoy sits within a county that already holds a remarkable concentration of prehistoric monuments, from the passage tombs of Céide to the court cairns scattered across its northern parishes.