What makes the site at An Choill Mhór particularly curious is the layering: early circular foundations swallowed up by a rougher, sub-rectangular enclosure built afterwards along their northern side, and then, tucked inside one of the huts, a small oval sheep-shelter constructed by someone who found the old walls perfectly serviceable for a new purpose. The result is a kind of accidental archaeology in stone, where several different moments of use overlap without any of them quite erasing the others.

The two huts are clochán-style structures, a clochán being a beehive-shaped dry-stone dwelling built without mortar, a form associated with early medieval and early Christian settlement in the west of Ireland. The eastern hut is the smaller of the two, measuring around 3.25 metres across internally, its dry-stone wall corbelled to a thickness of between 1.8 and 1.9 metres and surviving to a height of 1.2 metres in places. The entrance on the southern side is now obscured by collapse. The western hut is slightly larger, with an internal diameter of around 4 metres, its wall standing to a maximum of 1 metre. Its entrance likely faced east-south-east. At some later point, a farmer or shepherd built a small oval shelter inside the western hut, using the inner face of its ancient wall as one side of the new structure. The whole complex was documented by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, a thorough study of the Corca Dhuibhne region that catalogued many such sites across this archaeologically dense part of Kerry.