No mound, no hollow, no obvious mark on the ground gives it away. The only reason anyone knows it exists at all is that it turned up during the digging of a rural water scheme, when groundwork revealed the buried remains of a fulacht fia, the ancient cooking or processing site found in great numbers across the Irish countryside.

Fulachtaí fia, sometimes spelled fiadh, are among the most common archaeological monument types in Ireland, typically consisting of a horseshoe-shaped mound of burnt and fire-cracked stone surrounding a trough that would once have been filled with water and heated using stones from a fire. They date predominantly to the Bronze Age, though some examples span a wider period, and their precise function has been debated; cooking, brewing, textile processing, and bathing have all been proposed at various points. The Commeen example left no surface trace, meaning the characteristic crescent mound of blackened stone that survives at so many other sites has either been dispersed or was never prominent to begin with. A well is recorded nearby, which is consistent with the waterlogged, low-lying ground these sites tend to favour. Beyond that, the circumstances of its discovery, a chance encounter with groundwork machinery rather than any planned investigation, mean the record is thin.