The wall that defines it is built without mortar, stone laid on stone in the ancient drystone tradition, and it survives to just seventy centimetres at its highest point. That is not much to look at, but the footprint itself tells a quiet story: roughly 3.7 metres north to south and 2.8 metres east to west internally, it is a space about the size of a modest garden shed, and someone once lived in it.

The cashel, known as Cathair an Choimín or Cahernacummeen, is a cashel in the early Irish sense, a stone-walled enclosure used to define and protect a settlement or farmstead, analogous in purpose to the earthen ring-fort but built from the readily available stone of the western peninsulas. The hut foundation sits in the western part of the interior. What is particularly interesting about it is the absence of any clearly defined entrance through its walls, combined with the presence of small niches set into the inner face at the north and west sides. Niches of this kind in early Irish structures were likely used for storage, perhaps for a lamp or small objects, tucked into the thickness of the wall to keep them close at hand. The survey of this site was carried out as part of the Corca Dhuibhne archaeological survey of the Dingle Peninsula, published in 1986 by J. Cuppage under the auspices of Oidhreacht Chorca Dhuibhne, a landmark regional study that catalogued the extraordinary density of early remains across this part of County Kerry.