Cut directly into the sand subsoil, just north of a medieval church and its graveyard, lay a kiln structure that had been quietly waiting beneath the surface, its purpose still not entirely settled.

The structure was keyhole-shaped in plan, a form typical of kilns built for processing agricultural or building materials. It consisted of a long linear flue, measuring 8.5 metres in length, 3.48 metres wide, and 1.2 metres deep, leading at its eastern end to an elliptical bowl. The sides had been stone-lined, and a single lintel stone survived over the flue. What makes this kiln particularly interesting is that its function remains ambiguous. Beneath the stone lining, excavators found a charcoal-rich deposit that may contain charred cereal grains, pointing towards use as a corn-drying kiln, a structure used to dry harvested grain before milling or storage. Corn-drying kilns were common across medieval Ireland, where the damp climate made field-drying unreliable. But the presence of small fragments of oxidised limestone in some of the overlying fills hints at a secondary or alternative use as a lime kiln, in which limestone would have been burned at high temperatures to produce quicklime for use in mortar or land improvement. The record of this find was published by Cummins in 2000. Whether the structure served both purposes at different points in its life, or whether the limestone fragments arrived by some other means, has not been resolved.