The ground surface shows no trace of the medieval house that once stood here, and yet the excavation carried out in 1939 revealed a domestic world in considerable detail, preserved beneath the sand until someone thought to look.

The house, recorded as House A in Françoise Henry's 1945 publication, was a subrectangular structure built in drystone, a method requiring no mortar, relying instead on careful fitting of stone against stone. Rather than simply laying foundations at ground level, the builders began by digging a pit, lining it with upright slabs, then continuing the walls upward in slightly corbelled courses, meaning each horizontal layer of flat slabs projected fractionally inward, a technique associated with early medieval Irish and Atlantic island architecture. The walls were thin and had survived poorly, but enough remained to read the building's layout. A door and a window both faced north-east, and a large slab found leaning near the doorway appeared to fit the inner frame precisely; Henry suggested it may have functioned as a movable door. Across the room, a soot-blackened opening in the south-west wall seems to have served as a flue for a substantial hearth at the centre, built in two phases and lined with stone and clay. In the south-east corner, upright slabs divided off a small area thought to have been used for sleeping. The finds recovered during excavation give a sense of the people who lived here: a probable iron knife, bone pins and points, a stone spindle whorl for spinning thread, a disc of whalebone, a broken quern for grinding grain, a hollow sheep's horn, a fragment of schist, and quantities of animal bone, fish bone, and shell. It is a list that speaks of a community sustaining itself by fishing, farming, and small-scale craft on a small Atlantic island.

Two further medieval houses, conjoined, survive a few metres to the north-west of this site and together the cluster offers some sense of how this part of the island was once occupied. The site is a National Monument in state ownership.