On the Curragh of Kildare, that wide expanse of open limestone grassland better known for racehorses and military barracks, there sits a small earthen mound that has been quietly losing its shape for some considerable time. It is not dramatic, and it makes no effort to announce itself. Oval in plan, measuring roughly 8.8 metres east to west and 5.5 metres north to south, it rises only between 0.3 and 0.7 metres at its eastern end, which is the better-preserved end. Someone, at some point, has dug into the upper surface from the west, leaving that side further degraded than the rest.

The mound sits at the western end of a low, westward-projecting spur of ground, a position that may once have been deliberately chosen, though what purpose originally lay behind its construction is no longer clear. It came to wider notice through an aerial photograph taken by the Department of Defence in 1999, which is itself a quietly telling detail: a feature so subtle on the ground that it needed the distancing perspective of flight to be properly recorded. Earthen mounds of this kind on the Irish landscape can belong to a wide range of periods and functions, from prehistoric burial monuments to medieval boundary markers, but this one carries no firm identification. It is simply there, grass-covered, oval, and reduced.