Nobody knows when it was built. The archaeology cannot say whether it dates to the early medieval period, the Bronze Age, or somewhere else entirely, and so it is logged simply as a house site of indeterminate date, which is a category that tells you everything and nothing at once. What the ground does preserve is a double-faced stone wall, still standing between 0.4 and 0.6 metres high and around 0.6 to 0.7 metres wide, with a spread of tumbled stone spilling outward up to 3.7 metres on the western and north-eastern sides. The structure measures roughly 10.4 metres across its longer axis, suggesting a reasonably substantial circular dwelling.

The site sits within a large multiperiod field system at Fanygalvan, meaning the walls, boundaries, and enclosures surrounding it were laid down across different eras by different people with different purposes. Approximately nineteen metres to the north-west lies a second house site, and around fifty-four metres to the north there is a fulacht fia, a type of burnt mound associated with prehistoric cooking or industrial activity, in which stones were heated and dropped into water-filled troughs. The proximity of these features to one another suggests this hollow once formed part of a working, inhabited landscape, layered with activity over a long stretch of time. The precipice to the west would have been a hard boundary, shaping movement and settlement around it.