A rath is a roughly circular enclosure, typically defined by one or more earthen banks and ditches, that served as a farmstead during the early medieval period in Ireland. Finding a discrete mound within the interior of one is not the norm, and this particular example, measuring around ten metres wide and just over a metre in height, occupies the eastern side of the enclosure, quietly complicating any straightforward reading of the site.

The mound is composed of earth and stone, and its position within the rath rather than outside it suggests it was either contemporary with the enclosure or added deliberately within its bounds at some later point. Whether it represents a demolished structure, a deliberate earthwork, a burial feature, or something else entirely is not recorded. Its dimensions are modest, the kind of feature that can be easy to overlook in a landscape full of humped and uneven ground, yet it was noted specifically in the Archaeological Survey of Ballinrobe and District, compiled by Lavelle in 1994, which places it firmly in the record as something worth distinguishing from the enclosure around it.