It is composed of burnt material, the characteristic signature of a fulacht fia, and it is not alone. Another of the same type lies roughly a hundred metres to the north, and this single townland may contain as many as nine such features in total, making it a quietly remarkable concentration of prehistoric cooking sites in a relatively small area of mid Cork.

Fulachta fiadh (the singular is fulacht fia) are among the most common archaeological monuments in Ireland, typically dating to the Bronze Age. They are the remnants of outdoor cooking places, where stones were heated in fire and then dropped into water-filled troughs to bring the water to a boil. The cracked and shattered stones, discarded after each use, accumulated over time into the horseshoe-shaped or circular mounds that survive today, usually in low-lying or waterlogged ground where a reliable water source was close at hand. The Garraneduff example fits this pattern precisely, sitting in boggy terrain where the conditions for both preservation and original use would have been well suited. A surveyor named Broker recorded the cluster of up to nine such monuments in this townland, suggesting repeated or sustained activity in this particular landscape over a long period, though the precise relationship between the individual sites is not fully understood.