What has emerged is the characteristic horseshoe outline of a fulacht fia, one of the most common yet least understood monument types in the Irish landscape. A fulacht fia is essentially a prehistoric cooking site, typically consisting of a trough, a hearth, and a mound of fire-cracked stone that accumulated as heated rocks were used to boil water. This one measures roughly 14 metres north to south and 7 metres east to west, making it a reasonably substantial example of the type.

What makes the Kilmartin site quietly notable is not its size but its company. A second fulacht fiadh lies approximately 22 metres to the west-northwest, meaning two of these monuments sit in close proximity within the same stretch of pasture beside the same watercourse. The pairing is not entirely unusual across Ireland, where fulachta fia are often found clustered near reliable water sources, but it does suggest repeated or prolonged use of this particular spot. The monuments are generally dated to the Bronze Age, though some examples have produced dates ranging considerably earlier or later. Both sites at Kilmartin appear to have survived largely through burial and obscurity rather than any formal protection, with the erosion caused by grazing animals responsible for bringing this one back into view.