The evidence is slight but suggestive: a semi-circular hollow in the ground, roughly 6.8 metres east to west and 5.6 metres north to south, sinking about 0.6 metres below the surrounding surface. Local memory adds a detail that the hollow alone cannot supply, that at some point an opening was visible in the outer slope of the northern scarp of the enclosure. Taken together, these two features point toward the likely presence of a souterrain, an underground stone-lined passage or chamber, typically built during the early medieval period as a place of refuge, storage, or ventilation beneath a settlement.

The ringfort in question, recorded as MA062-028, is a rath, the Irish term for a roughly circular earthen enclosure that once defined the boundary of a farmstead. Raths are among the most common archaeological monuments in Ireland, and it was not unusual for their inhabitants to construct souterrains beneath or adjacent to the living area. The collapsed or subsided hollow visible today, sitting directly above where that external opening was once reported, is characteristic of what happens when the roof of such an underground structure fails over centuries and the ground above gradually gives way. No excavation appears to have confirmed the souterrain's existence, and the opening itself is no longer visible, leaving the site in an ambiguous state, suggestive rather than proven.