Then there is the fascinating ‘Joshua’ panel, which remains in Florence. To portray the crumbling of Jericho’s walls before Joshua’s army, Ghiberti incised deep cracks in the fortifications. Cracks! Along with holes, cracks would be the bronze artist’s greatest fear. Only a man like Ghiberti, who rose immediately to the summit of his profession and stayed there, would be so insouciant as to simulate dreaded cracks in his bronze casting.