Nobody knows when it was built. The walls are dry-stone, meaning they were laid without mortar, each stone selected and placed to hold its neighbours through weight and friction alone, and they have held. The doorway, positioned at the eastern end of the south wall, is lintelled, with a single flat stone spanning the opening above. Outside that entrance, a semicircular wall curves away from the building to enclose an irregular area that may have functioned as an annexe, a sheltered yard, or a space for animals.

The structure is modest in scale, measuring roughly 2.6 metres in length and 2.1 metres in width, which places it at the smaller end of what might have served as a dwelling, a field shelter, or a temporary seasonal residence. Drystone construction of this kind was practised across many centuries in the west of Ireland, and without datable finds or documentary evidence, it is genuinely difficult to assign a period. The orientation along a north-south axis and the placement of the doorway facing roughly south, catching available light and offering some shelter from prevailing westerly weather, are practical choices that could belong to almost any era. The semicircular annexe wall is the most intriguing element; straight enclosures are more common, and the curved form here suggests either a considered response to the terrain or a building tradition that repays closer attention.