When surveyors revised the Ordnance Survey six-inch map in 1944, they marked a cluster of hachured features at this location, hachures being the short radiating lines used to indicate slopes or surface disturbance. The markings were precise enough to suggest something worth noting, but vague enough to leave the nature of the feature open to interpretation for decades.

It was not until 1984 that an inspection on the ground resolved the question: the features were the remains of a quarry, cut into the glacial ridge at some point after 1700. That date matters for a specific bureaucratic reason. Because the site post-dates AD 1700, it falls outside the scope of bodies concerned with prehistoric and early historic archaeology, and so it sits in a quiet administrative gap, recorded but not formally studied. The ridge itself is a product of glacial deposition, the kind of long, low landform left behind as ice sheets retreated across the west of Ireland, and its stone would have been a practical local resource for building or road-making in the post-medieval period.