The stones, set on their edges and forming a hearth little more than half a metre across, are the most legible detail left inside a hut that has otherwise softened into a low, irregular spread of rubble. That a hearth survives at all, still holding its shape at a height of around twenty centimetres, gives the site an odd intimacy. This was not a monument built to impress; it was somewhere a person, or a family, kept warm.

The hut itself is subrectangular in plan, measuring roughly 6.4 metres on its longer north-east to south-west axis and 4.4 metres across. Its walls, such as they remain, present as a grass-covered stone spread between one and one and a half metres wide and no more than half a metre tall at their highest point. The structure sits within a larger enclosure whose date and function are uncertain, though it is considered possibly prehistoric. Enclosures of this kind in the Irish landscape range widely in period and purpose, from Bronze Age farmsteads to early medieval settlements, and without excavation the Ballyganner example resists easy classification. What the visible remains suggest, cautiously, is a small domestic space, sheltered within a boundary that was itself already old, or at least intentional.