Known as Púicín na gCaorach, it is a drystone hut foundation, built without mortar, using carefully placed stones to hold their own weight. It measures roughly 4.5 by 3.7 metres across and still stands to a height of 1.25 metres. What makes it quietly worth attention is a detail noted in its interior: a small niche set into the wall, the kind of recess that might once have held a lamp, a vessel, or some small necessary object belonging to whoever sheltered here.

The structure was recorded by Cuppage in 1986, catalogued under the local name Púicín na gCaorach, a Irish phrase that translates loosely as the little shelter or hood of the sheep, suggesting the building may have served a pastoral function, perhaps as seasonal accommodation for someone tending flocks on the mountain. Gleann Fán lies on the Dingle Peninsula, a landscape already well populated with early remains, and this hut fits into a broader pattern of small-scale drystone construction found across the Atlantic coast of Ireland. The wall niche, modest as it is, indicates that whoever used this space thought about how to organise it, which gives even a ruined foundation a faint domestic character.