It is not visible at ground level. No earthwork rises above the surrounding terrain, no obvious boundary marks the spot. The site survives, if it survives at all, entirely below the surface of a low-lying residential area, hidden not by remoteness or woodland but by the ordinary accumulation of modern life.

What little is known comes largely from cartographic evidence. The first edition Ordnance Survey six-inch map, published in 1837, marks the site with the label "Fort", a term the OS surveyors applied to enclosures of presumed early medieval or prehistoric origin, typically circular earthworks that once served as farmsteads, settlement sites, or places of local ritual significance. The enclosure at Kilbarrack Upper was recorded and compiled by archaeologist Geraldine Stout, whose work has done much to document similar low-profile sites across the Irish landscape. The proximity to the strand is worth noting. Coastal and estuarine locations were frequently favoured by early settlers, offering access to marine resources, fertile ground, and natural boundaries, and what is now a built-up suburb would once have been a very different kind of shoreline environment.

Because the enclosure is not visible at ground level, there is little to observe on a casual visit in the conventional sense. The area is residential, and the site sits within an ordinary urban neighbourhood rather than any protected or signposted landscape. Its interest lies less in what can be seen and more in what the 1837 map tells us was once recorded here. For anyone with an interest in the buried archaeology of the Dublin coastline, the site is worth locating on a copy of the historic OS map, where the single word "Fort" gestures towards a history that the present streetscape gives no indication of at all.