This one barely announces itself at all. At Carrig Beg in County Limerick, what may be a ditch barrow survives as little more than a faint circular outline, legible not to the naked eye on the ground but to the overhead gaze of a satellite camera. Its existence was noted only after scrutiny of a Google Earth orthoimage captured in November 2018, making it the kind of discovery that belongs as much to the age of remote sensing as to prehistoric Ireland.

A ditch barrow is a burial mound, typically from the Bronze Age or earlier, defined by a surrounding ditch cut into the earth rather than, or as well as, an enclosing bank. Over millennia, ploughing, grazing, and the slow settling of soil can reduce such a monument to near invisibility at ground level, leaving only a slight difference in vegetation or drainage to betray its presence. At Carrig Beg, that telltale difference is compounded by the character of the land itself: the site sits in poorly drained grassland, the kind of waterlogged, rush-prone ground that is common across the Limerick lowlands and that tends, helpfully for archaeologists, to preserve subtle variations in soil compaction and moisture. It was Jean-Charles Caillère who first drew attention to the feature, and the record was subsequently compiled by Caimin O'Brien, with the entry uploaded in November 2021.

Because the barrow is identified primarily through aerial imagery rather than ground survey or excavation, its status remains tentative; the record describes it carefully as a possible ditch barrow rather than a confirmed one. For anyone curious enough to visit the Carrig Beg area, the site is on private agricultural land, and the outline is unlikely to resolve into anything dramatic underfoot. The poorly drained ground means the field can be saturated for much of the year, particularly in winter and early spring. What the visit offers, if anything, is the particular atmosphere of standing somewhere unremarkable on the surface while knowing that the earth beneath may hold considerably more, the geometry of a forgotten burial just barely visible, if at all, from thirty thousand feet above.