It could be a quarry pit; it could be where someone once lived. That ambiguity is precisely what makes it worth pausing over.

The feature sits near the foot of a broad, flat-bottomed valley that drains eastward, with the island's North Road, running between the harbour and the lighthouse, crossing the same valley some 37 metres further downslope. The hollow is subrectangular in plan, measuring roughly 5 metres on its north-north-east to south-south-west axis and about 5.9 metres east-south-east to west-north-west, and it is open on its eastern, downslope side. Three sides are defined by a steep, well-defined scarp, modest in height along the south and west at only 0.5 to 0.8 metres above the interior floor, but rising to as much as 2.4 metres on the northern side, where an earthen bank along the stream's southern edge adds to the apparent height. At the south-eastern corner there is a wide gap of about 2.5 metres where large boulders lie, and a small natural drainage channel exits the interior at the same point. Along the western side and at the south-western corner, there are possible traces of a rough boulder revetment, a low facing of stones used to stabilise the scarp, reaching about half a metre in height. The floor inside is largely level, heather-tufted, and measures 3.6 metres across its internal north-south axis. Twenty-eight and a half metres to the west lies a fulacht fia, a type of prehistoric cooking site typically identified by a mound of burnt and fire-cracked stone beside a trough, which suggests that this part of the valley has seen human activity over a long period. The date of the hollow itself remains unresolved; hence its deliberately tentative classification. Its regular shape and deliberate siting, sheltered and close to fresh water, are what push the interpretation towards a dwelling space or shelter rather than a simple extraction pit, though no material evidence has settled the question either way.