The entrance to this souterrain, a type of underground stone-lined tunnel built during the early medieval period in Ireland, is just thirty-two centimetres high, barely enough to squeeze through, and what lies beyond is only marginally more generous. The whole structure sits within a univallate rath, meaning a ringfort enclosed by a single earthen bank, which here overlooks Dingle Bay from a gentle south-facing slope. The bank survives to a height of two metres at its south-western arc, though in the eastern section it has been replaced at some point by an ordinary field wall, a quiet sign of how these ancient boundaries were quietly absorbed into later agricultural life.

The souterrain itself consists of two passages connected by a creepway, a short constricted crawl-through deliberately designed to slow or block anyone trying to move between chambers. The first passage runs roughly three metres north to south and is roofed by six large stone slabs, its walls built from low upright stones topped with drystone masonry. From its southern wall, a creepway just half a metre wide and half a metre high leads into a second passage, which extends to the south-west before turning south, where it eventually disappears under accumulated fill. The roof of this second passage, seven slabs at most sixty-five centimetres above the floor, makes it even more confined than the first. The original entrance to the rath itself may have been a gap at the north-west, about one and a half metres wide, while two other breaks in the bank appear to be later intrusions. The full survey and description of the site was published by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, a detailed catalogue of the Corca Dhuibhne region.

Souterrains like this one were typically built between roughly the seventh and twelfth centuries, and their exact purpose continues to be debated, though most scholars favour a combination of storage and refuge. What makes this example quietly compelling is the deliberate architecture of difficulty: the almost impassable entrance, the creepway bottleneck, the turning passage blocked at its end. Whatever was being kept safe here, or kept out, the builders put considerable thought into making access as awkward as possible.