An oval slab of shale, roughly the size of a large door lying flat, sits embedded in the ground on a gentle east-facing slope in Gortaclade, County Waterford. What makes it worth a second look are the hollows worn into its surface: three complete circular basins and the remnant of a fourth, ground into the stone over time by human hands. The largest of these cups measures around 45 centimetres across and 18 centimetres deep, the others noticeably smaller but carefully formed. These are bullauns, a term for the deliberately carved or ground depressions found on stones across Ireland and occasionally Britain, most often associated with early medieval religious or ritual sites. Their precise original purpose remains debated, though theories range from grinding grain or pigments to use in cursing or blessing rituals, and many bullaun stones accumulated folk traditions long after their original function was forgotten.

The stone at Gortaclade measures 1.7 metres by 1.2 metres in its oval outline and is made of shale, a relatively soft sedimentary rock that would have yielded more readily to repeated grinding than granite or sandstone. It was recorded by Power in 1952 and later included in the published Archaeological Inventory of County Waterford. The presence of four basins on a single stone, rather than the more common one or two, makes this particular example quietly unusual. Each hollow has been worked to a consistent depth, suggesting sustained and deliberate effort rather than incidental wear, and the partial fourth basin adds a slightly unresolved quality to the whole, as though the work was simply left unfinished at some point in the early medieval period or perhaps long before.