It is a fulacht fia, a type of monument found in enormous numbers across Ireland, most commonly dating to the Bronze Age. The term refers to a mound or spread of fire-cracked stones and charcoal-rich soil, the accumulated debris of repeated episodes of heating stones in a fire and plunging them into a water-filled trough, most likely for cooking or possibly other purposes such as bathing or textile processing. The Annakisha example sits in tillage ground and presents itself as a roughly oval patch, measuring approximately sixteen metres north to south and thirteen metres east to west.

Fulachtaí fia, to use the Irish plural, are among the most numerous archaeological monument types on the island, with many thousands recorded. What makes any individual example worth pausing over is the sheer persistence of the evidence. The burnt and shattered stones that accumulate through this process are effectively inert once discarded, resistant to decay, and so the mounds they form can survive millennia of ploughing, grazing, and drainage works. At Annakisha, the spread has endured within agricultural land, its oval outline still legible as a concentration of burnt material despite the disturbance that tillage brings over generations. The site does not announce itself dramatically; it simply remains, a quiet anomaly in the soil.