Rather than building a freestanding structure, whoever constructed this lime kiln positioned it between a natural rock outcropping and the quarry face, effectively letting the geology do half the work of containing the heat and supporting the structure.

A lime kiln is a relatively simple industrial device: crushed limestone is layered with fuel and burned at high temperature, producing quicklime, which was then spread on fields to reduce soil acidity, a practice widespread across rural Ireland from the seventeenth century onward. This example in Park survives to a front elevation of 3.5 metres, built in random-rubble limestone construction and facing north. Its most visible feature is a segmental-arched recess, roughly 2.46 metres wide and 2.4 metres deep, though it is now full of debris. Behind the arch, sloping slabs at the rear and a lower inner arch mark the draw-hole area, where the burned lime would have been raked out once firing was complete. Above, the funnel-shaped chamber into which the limestone and fuel were loaded from the top has been infilled; it was limestone-lined and measured approximately 2 metres in diameter. The whole structure was built directly from the same stone it was designed to burn, which gives it a quietly self-referential quality, a kiln made of limestone sitting inside a limestone quarry, consuming its own surroundings.