The mounds are easy to overlook, and that uncertainty is precisely what makes them interesting. They may be fulachta fiadha, a type of prehistoric cooking site found widely across Ireland, typically identified by a horseshoe-shaped mound of fire-cracked stone surrounding the remains of a water trough. The standard process involved heating stones in a fire, then dropping them into a trough filled with water to bring it to a boil, used for cooking meat and possibly for other purposes including bathing or textile processing. But the mounds here are anomalous: none of them show the characteristic trough, and some may simply be natural landforms.

What elevates the site beyond a single ambiguous mound is the sheer number of potential examples concentrated in one stretch. Researcher Will Forbes identified eleven fulachta fiadha along this reach of the Clasha River, a density that would be significant if confirmed. The mounds vary considerably in size, ranging from around 17 metres in diameter at the smaller end to over 51 metres in length at the largest, with heights between roughly 0.2 and 0.68 metres. That flatness is part of the problem: fulachta fiadha that have been disturbed by agriculture or river management tend to lose their defining shape, leaving behind only the spread of burnt stone, if that. Here, the fields along the riverbank have been reclaimed and the river itself canalised, meaning the landscape has been substantially altered from whatever it looked like when these features were in use, most likely during the Bronze Age.