It was found, and lost, in the same moment: a sewer-digging crew in 1958 broke through the structure before any archaeologist had the chance to record it properly, and the stones were cleared away before any formal investigation could take place.

What survives is an account pieced together from the workmen who uncovered it. They described a square cist, the term for a small stone box burial typical of the Bronze Age in Ireland, in which a body or cremated remains would be placed, sealed with a capstone and buried. This particular example measured roughly 0.6 metres by 0.6 metres, oriented northwest to southeast, with the flat capstone resting on four upright slabs at a depth of 0.52 metres. Those dimensions are modest but consistent with the form: cists were not built for permanence above ground but for containment below it. Whether any human remains or grave goods were present was never recorded. The accounts of the workmen, cited in later research by Doody and Waddell, are the only documentation that exists.