The raised interior measures just 1.75 metres in diameter, barely wider than a doorway, yet the ground around it preserves the full structural logic of a ring-barrow: a circular earthen scarp, a shallow surrounding fosse (a ditch cut into the ground to define and separate the mound), and a low external bank enclosing the whole arrangement.

Ring-barrows are a form of funerary monument associated broadly with the Bronze Age and Iron Age in Ireland, though the term covers a range of forms and periods. What makes this example at Duncummin quietly compelling is not its size but its context. It sits within a field system and lies just ten metres from another ring-barrow to the west-southwest, with further examples in the vicinity. This clustering suggests the area was used over time as a dedicated burial or ceremonial landscape rather than as a site of isolated interment. The earthworks themselves are modest in scale: the enclosing scarp stands only about 0.2 metres high, the external bank rises barely 0.1 metres on its outer face, and the fosse at its base is less than a metre wide. The interior, notably, remains level and clear of overgrowth, which allows the geometry of the monument to be read with some clarity despite its diminutive proportions.