Baroque decoration of the ceiling of the crypt

Fourth vault of the central nave, above the altar of Saint Donnino.The four segments of the vault are edged with blue and yellow candelabro motives; at the centre of the gray-background segments, into monocrome baroque frames are represented in polychromy the scene of the martyrdom of Saint Donnino, in discs with golden edges. The south one represent Saint Donnino picking up his own head.