The story has circulated long enough to qualify as local tradition, which in Irish archaeology is rarely dismissed outright. Researchers now suspect the tale may be a folk memory attached to something far more prosaic, and far more interesting, than a pirate cache: a souterrain.

A souterrain is an underground stone-lined passage or chamber, typically built during the early medieval period, between roughly the sixth and twelfth centuries. They are found across Ireland, often associated with ringforts, and their precise function is still debated; they may have served as refuges, as cool storage for dairy produce, or both. The treasure legend at Colmanstown fits a recognisable pattern in Irish folklore, where the memory of a concealed underground structure becomes, over generations, a story about hidden wealth. The site was noted and compiled by archaeologist Geraldine Stout, though even at the time of recording the exact location of the monument was unknown. That ambiguity is itself significant. The boulder, the cemetery, the passage beneath, all of it exists now at the level of tradition rather than confirmed physical record.

Because the precise location has not been established, there is nothing to visit in the conventional sense. Colmanstown cemetery itself can be found in the general area, and the surrounding landscape is the kind of quietly ordinary Dublin countryside that rarely signals its own depth. Anyone with a serious interest in the site would do better to begin with the Archaeological Survey of Ireland records and Stout's own work on the region's early medieval remains, rather than arriving at the graveyard expecting a marked boulder. The value here is less in what can be seen and more in what the tradition suggests: that beneath the surface of even the most unremarkable-looking ground, the outline of something much older occasionally persists, if only as a story about treasure that nobody ever quite manages to find.