That ambiguity is precisely the point. A small embanked enclosure, roughly fifteen to twenty metres across, was recorded on the Ordnance Survey's six-inch map of 1838, drawn with enough confidence to suggest the surveyors could see something on the ground. By the time later editions of the same map were produced, it had disappeared from the cartographic record entirely, and today there is no visible surface trace whatsoever.

Circular embanked enclosures of this kind are a broad category in Irish archaeology, ranging from early medieval ringforts used as farmsteads and status markers to earlier ceremonial or funerary sites. Without excavation, it is rarely possible to say which type a given example represents. What can be said about this one is that it sat on a rise within what is now the wooded garden of Mount Falcon, with a lake visible to the south, the kind of elevated, outward-facing position that recurs across many such sites. Its disappearance from later maps does not necessarily mean it was demolished or built over; earthworks of modest height can be obscured by tree growth, gradual silting, or simply the shifting priorities of surveyors revising earlier work. The 1838 record remains the only firm evidence that anything was ever there.