A fulacht fia is a burnt mound, typically the accumulated debris of repeated episodes of fire-cracking stones, which were heated and dropped into water-filled troughs to boil liquid. What exactly was being cooked, brewed, or processed remains a matter of genuine debate among archaeologists, and that uncertainty is part of what makes these modest humps in the ground so persistently interesting.

The Caherbaroul mound sits in rough grazing land, with a well to its north-east, a proximity that is characteristic of the type since a reliable water source was essential to however the site was used. The mound itself is horseshoe-shaped, a form that recurs across fulachtaí fia and likely reflects the way material was thrown up around three sides of the working trough over time. It measures fifteen metres in length, twelve metres in width, and just under half a metre in height, a modest enough profile that would be easy to walk past without registering. What makes the Caherbaroul location particularly notable is that a second fulacht fia lies approximately fifty metres to the south, suggesting that this small area of mid Cork was returned to repeatedly, whether by the same community across generations or by different groups who found the same well and the same ground convenient for their purposes.