Extracting the stone of madness, detail. Alternative title: The Stone Operation, detail The Cure of Folly, detail Cutting the Stone, detail, Hieronymus Bosch, between 1488 and 1516

Object Type: painting. Genre: allegory. Date: between 1488 and 1516. Dimensions: height: 48.5 cm (19 in) ; width: 34.5 cm (13.5 in). Medium: oil on panel. Collection: Museo del Prado. Hieronymus Bosch-Removing the Rocks from the Head-Detail