The structure measures six metres across and still stands to a height of around 1.25 metres, its walls roughly 1.1 metres thick. The construction technique is corbelling, a method in which stones are laid so that each course projects slightly inward over the one below, allowing a roof to be formed without timber or other perishable materials. It is a technique found widely across the Dingle Peninsula and associated with early medieval activity, though such structures are notoriously difficult to date with precision.

Some fifteen to twenty metres to the east lies a second, smaller structure in considerably worse condition. Its shape is no longer clear, but it measures roughly 3.5 by 2.75 metres and survives to only 0.65 metres in height, with walls around 1.55 metres thick. The pairing of a larger and a smaller building is a familiar arrangement in early Irish pastoral settlement, where a principal shelter might be accompanied by a storage building or an animal pen. Both structures were recorded by J. Cuppage as part of the Corca Dhuibhne archaeological survey published in 1986, a systematic examination of the Dingle Peninsula that documented scores of similarly quiet remains across this part of Kerry. The site sits in the townland of Fán, in a landscape that saw sustained use over many centuries, the evidence of which tends to survive precisely because the ground was never put to more intensive agricultural use.