<P> Meanwhile, a fire is struck using the historic flints from Jerusalem at Chiesa degli Santi Apostoli . It is then carried in procession to the cathedral square by members of the Pazzi family, clerics, and city officials . </P> <P> The cart is loaded with fireworks while a wire, stretching to the high altar inside the cathedral, is fitted with a mechanical dove (the "colombina"). Shortly thereafter, at the singing of the Gloria in excelsis Deo during Easter Mass, the cardinal of Florence lights a fuse in the colombina with the Easter fire . It then speeds through the church to ignite the cart outside . </P> <P> During all of these stages, the bells of Giotto's campanile ring out . </P> <P> The complex fireworks show that follows lasts about 20 minutes . A successful display from the "Explosion of the Cart" is supposed to guarantee a good harvest, stable civic life, and good business . </P>

Italian city in which a cart full of fireworks scoppio del carro is lit on easter sunday