On the 1932 edition of the Ordnance Survey six-inch map, it appears as a hachured feature, the cartographic shorthand used to suggest a depression or hollow in the landscape. That marking was enough to attract attention decades later, and when the site was inspected in 1985, it turned out to be nothing more mysterious than a quarried-out pit, the kind of working hollow that farmers and local builders across rural Ireland once cut into the land to extract stone, gravel, or other useful material.

The detail that quietly closes the file on this place is a matter of dating. Because the pit is of post-AD 1700 origin, it falls outside the scope of formal archaeological classification in Ireland, which generally concerns itself with remains from earlier periods. That boundary is not a judgement on significance so much as a practical line drawn around a particular kind of inquiry. The quarry at Clogherboy is therefore a site that was mapped, inspected, identified, and then professionally set aside, a small feature in the Galway landscape that spent over fifty years as an unresolved mark on a map before being explained and quietly filed away.