This tablet commemorates the National Gallery’s relationship to Manod quarry. This disused slate mine in Eryri, North Wales, kept the nation’s paintings during the Second World War. In August 1939, the collections left Trafalgar Square for safekeeping in Wales. By the summer of 1941, the mines at Manod stored them deep underground. Artist Jeremy Deller conceived this tablet with the art gallery Mostyn in Llandudno. It was part of The Triumph of Art, a nationwide programme of performances and events celebrated the Gallery’s 200th birthday in 2024. John Neilson, a letter carver based in North Wales, engraved the tablet. He used slate excavated from Manod. Members of the Young Company from Welsh-language theatre Frân Wen presented the tablet to the Gallery’s Director, Sir Gabriele Finaldi, on 26 July 2025. The ceremony concluded Carreg Ateb: Vision or Dream?, a multi-part production made by Frân Wen for The Triumph of Art.