No mound rises from the earth, no stones interrupt the grass, and anyone walking past would notice nothing out of the ordinary. What survives here is a ditch barrow, a type of prehistoric funerary monument consisting of a circular ditch cut into the ground, sometimes surrounding a low central mound or burial, and it has been rendered effectively invisible by centuries of ploughing and soil movement. The only way to know it is there at all is to look down from above.

The site came to light through aerial survey, specifically through cropmark evidence visible on an Ordnance Survey Ireland orthophoto and on Google Earth satellite imagery. Cropmarks form when buried features, ditches that have filled with looser, moisture-retaining soil, or banks that have compacted the earth beneath them, cause overlying crops or grasses to grow at slightly different rates or to different heights. In dry conditions especially, the difference becomes visible from above as a pattern of darker or lighter growth. In this case, the circular outline of the ditch barrow is legible enough from the air to confirm the monument's presence and general form. The record was compiled by Caimin O'Brien, drawing on details provided by Jean-Charles Caillère, and was uploaded to the national record in November 2021.

Because the monument survives only as a buried feature with no visible surface expression, there is little to observe on a casual visit to the area. The townland of Moanroe sits within Coonagh barony on the northern fringes of Limerick city, low-lying agricultural land that does not immediately suggest ancient activity. Accessing the site would require landowner permission, and even then the experience is more conceptual than visual, standing above something rather than looking at it. The most instructive view remains the satellite image itself, where the ghostly ring of the ditch barrow is faintly but unmistakably present, a circular trace in the cropgrowth that reads as a kind of echo from an older landscape.