Hachuring, a cartographic convention used to suggest slope or depression in the landscape, was enough to flag the spot as something worth investigating. When someone eventually did inspect it in 1985, the feature turned out to be a disused sand and gravel pit, the kind of small extractive hollow that once supplied raw material for local construction and road maintenance across rural Ireland.

The pit post-dates 1700, which places it in a period of considerable agricultural improvement and infrastructural activity in Connacht, when demand for gravel and sand for drainage works, lane-making, and building mortar was routine. Such pits rarely drew formal attention; they were dug, used, and abandoned without ceremony, leaving only a shallow scar in the ground and, occasionally, a mark on a map. The gap of more than fifty years between the map being published and the site being inspected is itself quietly telling, a reminder of how many minor features were once recorded by surveyors and then left to accumulate questions.