Roughly 12.6 metres across, it is a fulacht fia, one of the most common yet persistently mysterious monument types in the Irish archaeological landscape. The term refers to a mound composed largely of fire-cracked stone, the accumulated debris of repeated heating. Thousands of these sites survive across Ireland, typically beside water sources, and while theories about their purpose range from cooking to textile processing to communal bathing, none has been settled conclusively.

What gives this particular site a quiet additional interest is that it does not stand alone. A second fulacht fia lies immediately to the south-east, close enough to suggest the two were used in conjunction, or at least that this stretch of wet ground was returned to repeatedly over time. Fulachtaí fia are generally dated to the Bronze Age, roughly between 1500 and 500 BC, though some sites show evidence of use across multiple periods. The process involved heating stones in a fire, dropping them into a water-filled trough, and bringing the water rapidly to a boil, leaving behind cracked and discarded stone that gradually accumulated into the characteristic horseshoe or oval mound form still visible today.

The site sits in marshy ground, which is entirely typical. Proximity to water was a functional requirement, and the low-lying, boggy conditions that made these places useful have also, in many cases, helped preserve them. The partial overgrowth at Currahaly is equally unremarkable for monuments of this kind, which often appear as modest rises in a field or wetland, easy to walk past without recognition.