The 1947 to 1948 revision of the OS six-inch map marked the feature using hachures, the short radiating lines cartographers use to suggest a raised or excavated landform, leaving its nature open to interpretation. It was not until a physical inspection in 1984 that the site was identified for what it actually is: a disused sand quarry, almost certainly worked at some point after 1700.

The quarry's relatively recent origins place it just outside the threshold that archaeological surveys typically apply when deciding what merits formal investigation. In Ireland, the Archaeological Survey concerns itself with sites and monuments that predate AD 1700, so a post-medieval sand quarry, however quietly curious its setting, falls outside that frame. What remains is a small landscape anomaly: a worked hollow on a boggy rise, noted, inspected, and then, in a sense, set aside. The gap between what a map symbol promises and what the ground actually holds is a minor but telling reminder of how much ambiguity survives in even routine cartographic records.