Roughly ten centimetres of dark humic soil sits over a deposit of burnt material, the characteristic signature of a fulacht fia. These are among the most common prehistoric monuments in Ireland, essentially outdoor cooking sites where stones were heated in fire and then dropped into water-filled troughs to bring them to the boil. The stones fracture and blacken with repeated use, accumulating over time into the horseshoe-shaped mounds that survive across the Irish countryside, often unnoticed by the people who farm around them.

What makes the Glenlara example quietly interesting is not the site itself in isolation, but the cluster it belongs to. A researcher named Bowman, writing in 1934, recorded six fulachta fiadh across this single townland, distributed across the holdings of several different landowners: two on Denis Murphy's land, and one each on land belonging to B. O'Keeffe, Nicholas D. Kenneally, Nicholas C. Kenneally, and Daniel Kenneally. The concentration suggests that this part of north Cork was intensively used during prehistory, with communities returning repeatedly to the same general landscape over generations. Whether any of these sites relate to one another in time, or represent entirely separate episodes of use across centuries, is not recorded, but the density alone is enough to make the townland worth pausing over.