This is a fulacht fia, one of the most common prehistoric monument types found across Ireland, and yet one that most people walk past without a second glance.

A fulacht fia is, in essence, the remains of an ancient cooking site, typically Bronze Age in origin. The usual method involved heating stones in a fire, dropping them into a water-filled trough to bring it to a boil, and repeating the process to cook meat or, as some researchers have suggested, to brew or to process hides. The shattered, fire-cracked stones discarded after each use are what accumulate into the distinctive horseshoe or crescent-shaped mound that survives at sites like this one. At Drombohilly, that mound measures roughly 7.5 metres east to west and 5.2 metres north to south, rising about 0.8 metres above the surrounding bog, with its opening directed southward toward the stream. The proximity to a reliable water source is entirely typical; fulachtaí fia are almost always found close to a stream, spring, or area of boggy ground where water gathered naturally. The bog that has slowly engulfed the surrounding pasture has, in this case, helped preserve what remains, holding the burnt material in place while the landscape around it changed beyond recognition.