At Mountrivers in County Cork, a prehistoric stone lies on its side in open pasture on a south-west-facing slope, 1.8 metres long and roughly subrectangular in cross-section. Whether it toppled, was deliberately felled, or was never fully raised is unknown. What is certain is that it has been lying there, largely unacknowledged, for a very long time.

Standing stones are among the most enigmatic monuments in the Irish landscape. Erected mostly during the Bronze Age, they served purposes that remain genuinely unclear, possibly marking boundaries, graves, astronomical alignments, or routes through the land. This particular example, measuring 0.9 metres wide and 0.25 metres thick, was absent from the Ordnance Survey six-inch maps of both 1842 and 1904, which means it either escaped the surveyors' attention during two separate mapping campaigns or was not considered significant enough to record at the time. That omission is itself quietly telling. Monuments that go unplotted on nineteenth and early twentieth-century maps often turn out to be the ones that slipped through local memory as well, known to neighbouring farmers but never formally acknowledged.