What it may actually represent is the collapsed and plundered remains of a souterrain, one of the stone-lined underground passages that were commonly built beneath or beside early medieval ringforts, most likely serving as places of refuge, food storage, or concealment.

Writing in 1952, a researcher named McCaffrey recorded that local people in the area spoke of a souterrain within the interior of the rath, and interpreted a heap of earth and stones at the centre of the enclosure as, in his words, "the spoil of a ravished souterrain". The word ravished here carries its older sense of something forcibly disturbed or ransacked, suggesting the underground structure had been broken into and its contents or stonework removed at some point before any formal record was made. That disturbed material has since settled into the gentle mound visible today, grassed over and blending quietly into the ringfort's interior.