What survives of it is barely visible to the untrained eye: a levelled scarp, no more than five centimetres high and roughly two metres wide, tracing the outline of a rectangular area measuring approximately ten metres by seven. Four marker rods placed at its corners are enough to make it legible in a photograph; without them, the feature dissolves back into the grass.

This small rectangular enclosure sits within the north-eastern sector of a larger subcircular enclosure, a type of monument found widely across Ireland and typically associated with early medieval settlement, though sometimes with earlier origins. A subcircular enclosure of this kind, often called a ringfort or rath, would originally have defined a domestic or agricultural space with an earthen bank and ditch; internal subdivisions, like the rectangular feature here, are less commonly recorded and may have served a range of purposes, from animal penning to storage. At Maryfort, both the inner and outer enclosures have been absorbed into the surrounding field system and are now worked as pasture, their boundaries ploughed or worn to the point where only the faintest scarp of disturbed earth remains to mark what was once a structured, inhabited landscape.