It is a fulacht fia, an ancient cooking site of a type found in great numbers across Ireland, typically dating to the Bronze Age. The usual interpretation is that stones were heated in a fire, then dropped into a water-filled trough to bring it to boiling point, cooking meat or other food; the cracked and fire-blackened stones, discarded after use, are what accumulate into the mound visible today.

What makes this particular spot a little unusual is not the site itself but its company. A second fulacht fia lies roughly sixty metres to the north, meaning that two of these monuments occupy the same small stretch of ground near the same watercourse. Paired or clustered fulachtaí fia are not unknown in Ireland, and the proximity of a reliable stream is entirely typical, since a ready water supply was essential to their function. Whether the two sites were used at the same time, by the same community, or represent activity separated by generations, the ground at Boola preserves a small patch of prehistoric routine, ordinary life rendered visible only by the stubborn persistence of burnt stone.