The feature, barely 1.6 metres across internally and sunk about 0.8 metres into the earth, is ringed by the sod-covered remains of a stone wall. On aerial photography it read as something ancient and domestic, the kind of circular trace that archaeologists associate with early medieval or prehistoric settlement. Up close, though, the story turns out to be more recent and considerably more practical.

When the site was added to the Record of Monuments and Places in 1997, the identification was tentative, based solely on what could be seen from the air. A subsequent field inspection revised the interpretation entirely. The hollow, with its modest stone surround, is almost certainly a ruined lime kiln, most likely dating to the nineteenth or twentieth century. A lime kiln was a small industrial structure, usually stone-built, in which limestone was burned to produce quicklime for spreading on acidic agricultural land, improving soil fertility. The presence of cultivation ridges, the parallel earthen mounds known as lazy beds that were used extensively in the west of Ireland for growing potatoes and other crops, in the fields immediately to the north-west and south of the site strongly supports this reading. The kiln and the ridges belong to the same agricultural world, a landscape shaped by the intensive smallholder farming that characterised this part of Mayo before and after the Famine.

What makes the site quietly interesting is less the structure itself than the process of its misidentification and correction. An unremarkable agricultural remnant, ruined and overgrown on a ridge of rough ground, briefly entered the archaeological record as something potentially far older. The revision is a reminder of how thoroughly post-medieval land use has marked the Irish countryside, and how easily one era's ordinary infrastructure can be mistaken, from a distance, for another era's habitation.