It is a fulacht fia, a type of prehistoric cooking site found in enormous numbers across Ireland, and this particular example measures roughly ten and a half metres long, eight and a half metres wide, and just under a metre high. The opening of the horseshoe-shaped mound faces north-north-east, as is common with these features, and the whole thing is now overgrown, blending into the landscape as little more than a slight rise in the ground.

Fulachtaí fia (the plural form) are among the most frequently encountered archaeological monuments in the Irish countryside. They date predominantly from the Bronze Age, roughly 1500 to 500 BC, and consist of the accumulated debris from repeated episodes of fire-cracking stones. The typical method involved heating stones in a fire and then dropping them into a water-filled trough to bring the water to a boil, most likely for cooking meat. The cracked and spent stones were then discarded to either side of the trough, forming the characteristic horseshoe-shaped mound that survives today. The mound at Carragraigue is modest in scale compared to some examples but sits within the broader North Cork landscape, which contains numerous monuments of this type scattered across what was once a well-settled prehistoric terrain. That it now lies in reclaimed pasture speaks to the long history of agricultural reshaping that has worked around, and in many cases over, the archaeological record of the region.