These kilns were once a common feature of the Irish rural landscape, used to burn limestone at high temperatures to produce quicklime, which farmers then spread on fields to reduce soil acidity. Most have crumbled or been absorbed into field boundaries, which makes a surviving example with its arch clearly defined something worth pausing at.

The kiln at Rathcobane has an arched recess measuring roughly 2.75 metres high, 2.5 metres wide, and 2 metres deep. That opening, known as the eye or draw hole, is where the burnt lime would have been raked out once the firing was complete. The structure sits to the west of the main road, oriented so that its working face looks out onto the laneway, a practical arrangement that would have allowed carts to draw up and collect the finished product. The top of the kiln is no longer accessible, so the upper bowl where the limestone and fuel were loaded cannot be examined directly, but the proportions of the arch give a clear sense of the scale at which lime was being produced here.