This is a fulacht fia, a type of cooking or processing site found in enormous numbers across Ireland, typically Bronze Age in date and almost always positioned near a water source. The mound itself is the accumulated waste of the process: stone that was heated in a fire, dropped into a water-filled trough to bring it to the boil, and then discarded once it had cracked and become useless. Over many uses, that discard built up into the horseshoe or circular mounds that survive today.

What makes the Donickmore site particularly striking is not the mound itself but its company. The same field contains at least four other fulachta fiadh, clustered within roughly 110 metres of one another. Two lie to the south-west, at approximately 30 and 70 metres distance; two more lie to the north-east, at around 90 and 110 metres. Whether they represent a single site used intensively over a long period, or a series of separate episodes of activity returning to the same productive stretch of marshy ground, is difficult to say without excavation. Clusters of fulachta fiadh are not unusual in Ireland, but finding five in a single field, strung along a stream, gives a tangible sense of just how regularly and deliberately this landscape was used in prehistory.