It is a corn-drying kiln, the kind of utilitarian installation that once processed grain across rural Ireland but rarely survives in recognisable form. Corn-drying kilns were used to dry harvested grain before milling or storage, particularly in the damp Atlantic climate where natural drying was unreliable. This example is unusual in how much of it remains legible.

The structure was identified as a corn-drying kiln by researchers Henry and Mitchell in 1957 and 1989 respectively. What survives is a rectangular block of drystone masonry, a building technique using stones laid without mortar, with a rubble and earth core faced at its base by orthostats, large upright stones used to form a stable lower course. The southern and eastern sides are the best preserved, measuring 4.1 metres and 1.95 metres in length, and standing up to 1.1 metres above ground level at the south. The northern side has been obscured by material washed down from the hillside over time. The kiln bowl itself sits at the western end of the structure, measuring just over a metre across at its mouth, though it is now filled with debris to within 0.8 metres of its top. Traces of a flue, the channel that would have directed heat into the drying chamber, remain visible in the southern face. Henry noted in 1957 that a double row of orthostats to the south and a stretch of walling to the east were once connected to the main block by a series of horizontally placed slabs; those slabs are no longer present.

The kiln does not sit in isolation. A group of well-preserved rectangular huts lies approximately 170 metres to the west, and broad cultivation ridges, the raised earthen strips left by repeated tillage, are visible in the surrounding ground. Together, these features suggest a small but coherent agricultural landscape, one in which grain was grown, tended in nearby fields, and processed close to where people lived and worked on this exposed Atlantic headland.