A fulacht fia, the term used for a class of prehistoric cooking or processing site typically identified by a horseshoe-shaped mound of fire-cracked stone beside a trough and a water source, once occupied marshy ground here. Today there is no visible surface trace. The monument has effectively vanished into the landscape.

What happened is fairly straightforward. Local information points to land reclamation carried out in the early 1980s, which disturbed or buried whatever remained of the site. This is not an uncommon fate for fulachtaí fia. Because they tend to occupy low-lying, wet ground, exactly the kind of terrain that attracts drainage schemes and agricultural improvement, they are disproportionately vulnerable to that sort of work. What makes the Dooneens example additionally interesting is its position: it sat immediately south of a second fulacht fia, the two sites clustered together in the same boggy ground. Such pairings are known elsewhere in Ireland and may reflect repeated use of a favoured location over generations, or simply the practical logic of returning to a spot where water was reliably available and fuel close at hand.