On the 1931 edition of the Ordnance Survey six-inch map, the spot was marked with hachures, the short radiating lines surveyors used to indicate a depression or earthwork of some kind, suggesting to later readers something potentially ancient or archaeologically significant lurking beneath the grass.

When the site was inspected in 1984, the hollow turned out to be a disused gravel pit, most likely worked at some point during the nineteenth or early twentieth century. Gravel extraction of this kind was commonplace across rural Ireland during that period, when local road-making and building work relied heavily on whatever useful material could be dug from nearby ground. The pit at Curraghrevagh is modest in scale and unremarkable in appearance, yet it represents exactly the sort of small industrial trace that tends to slip out of the historical record, too minor to be formally documented at the time, and easy to misread from a map decades later.