On a west-facing slope in Burroge, County Galway, a small circular enclosure once measured roughly twelve metres across, the kind of modest enclosed space that might have served any number of purposes across Irish prehistory and the early medieval period. Ringforts and similar enclosures, built to define and defend a farmstead or dwelling, were once so common in the Irish landscape that tens of thousands of examples have been recorded. This one, however, is gone. A modern outbuilding now occupies all or part of the site, and no visible surface trace survives.

What makes it worth pausing over is precisely the gap between the map and the ground. Ordnance Survey surveyors working between 1912 and 1916 recorded a small circular enclosure here with enough confidence to include it on the 1:2500 plan, and it appeared again on the 1929 edition of the six-inch map. At some point between that mid-century cartographic moment and the present, the feature was built over. The enclosure exists now only as a mark on old paper, a circle on sheets that once captured a landscape in more detail than it perhaps deserved, from the perspective of whoever later decided to build.