Kilns of this type were used in medieval Ireland primarily for drying grain or burning limestone to produce lime for mortar and agricultural use, a comma or keyhole shape being a design that allowed draft to move efficiently through the structure. That this one sat right at the threshold of a defended enclosure suggests it was an active, working feature of a settlement rather than a peripheral outbuilding.

The kiln came to light during excavations in 2006, carried out under licence 06E0176 and reported by Mc Carthy around 2009. It was found positioned immediately inside the entrance to the inner ditch of a double-ditched enclosure, recorded in the Sites and Monuments Record as DU021-106. A double-ditched enclosure, essentially a defended or delineated space surrounded by two concentric ditches, is a form associated with both early medieval and later settlement in Ireland, though the late medieval date assigned to the kiln indicates activity on this site well into the post-Norman period. The placement of the kiln at the entrance point is a small but telling detail; it implies the space just inside the gateway was used for practical, productive work rather than left clear for movement or defence alone.

Ballynakelly is a townland in north County Dublin, and the site itself is not a visitor attraction in any formal sense. There is no on-site interpretation, and the excavated features will not be visible above ground. Anyone with a particular interest in the record can consult the Sites and Monuments Record entry DU021-106 through the National Monuments Service, or follow up Mc Carthy's report through the National Roads Authority excavation publication series. The value of a site like this lies less in what you can see on the ground and more in what the excavation revealed about the texture of late medieval rural life, a working kiln positioned, almost casually, at the front door of an enclosed settlement.