Hachuring, the use of short radiating lines to suggest a depression or raised feature in the terrain, was the cartographer's way of flagging something worth noting, though the map itself offers no further explanation. When someone finally went to look in 1984, the feature turned out to be a disused sand pit, quietly absorbed into the surrounding farmland over the intervening decades.

There is something quietly telling about the gap between the map and the ground. By the time of the 1933 survey, the pit was apparently significant enough to record, yet by 1984 it had been so thoroughly reclaimed by agriculture that only the old map preserved any memory of it. Sand pits of this kind were once commonplace across rural Ireland, worked locally for building purposes and land improvement, then abandoned when the useful material ran out or when the need passed. The land around them was often levelled and returned to grass, leaving little for the eye to catch.