For decades, the feature was known only as a hachured marking on the 1945 revision of the Ordnance Survey six-inch map, the kind of notation that might suggest an earthwork or some older disturbance in the landscape. It was not until an inspection in 1984 that the site was identified for what it actually is: a disused quarry, its original cuts and spoil heaps long since softened by vegetation into something almost geological in appearance.

The quarry post-dates 1700, which places it firmly in the period of improving landlordism and expanding agricultural infrastructure that reshaped much of the Irish countryside in the eighteenth and nineteenth centuries. Quarrying at this scale, producing stone for field walls, roads, or estate buildings, was a practical and unremarkable activity across Connacht during that era, which may explain why so little trace of it survives in the documentary record. What remains on the hillock is largely a matter of topography now, read more easily by someone who knows what they are looking for than by a passing walker.