It is small enough to overlook on foot, yet distinct enough from the air to catch the eye of anyone scanning aerial photographs for signs of earlier settlement. Whether it was ever a dwelling, a livestock enclosure, or something else entirely remains an open question, and that ambiguity is part of what makes it interesting.

The site came to light through aerial photography carried out in August 1996, when the outline of the enclosure became legible from above in a way it might never be at ground level. This is a common enough story with low-profile stone structures in Ireland: the slight difference in vegetation growth, or the angle of shadow at a particular time of day or year, reveals a geometry that centuries of weathering have otherwise blurred. Classified tentatively as a hut site, the structure belongs to a broad category of simple stone enclosures found across upland Ireland, some of which served as seasonal shelters, others as field boundaries or animal pens. Without excavation, the precise function and date of the Brandonhill example cannot be confirmed.