This is a circular hut site, one of a pair in close proximity, and its survival is partial at best. The wall, built from horizontally coursed stone laid in flat, overlapping layers, stands no more than twenty-five centimetres high internally and runs to about 1.2 metres in thickness. The interior measures 4.6 metres across from east to west. No entrance survives within the visible section, which makes it difficult to say much about how the space was originally organised or accessed.

Hut sites of this kind are scattered across the uplands and coastal margins of Kerry, and most are associated with early medieval settlement and farming, though some may have served as seasonal shelters for those moving livestock to summer pasture, a practice known in Ireland as booleying. What survives at Cool is the inner face of the wall, only partly visible, and the circular footprint itself. The site was recorded and described as part of a comprehensive archaeological survey of the Iveragh Peninsula carried out by Aidan O'Sullivan and John Sheehan, published by Cork University Press in 1996. A companion hut site lies a short distance to the south, suggesting this was never an entirely isolated structure, even if the relationship between the two is now hard to read on the ground.