The high altar, in marble (1626), has a polychrome wooden crucifix by Giovanni Pisano (early 14th century). At the foot of the altar are two wooden angels from the 15th century, by Domenico di Niccolò dei Cori. Behind it is the Ark of Saint Cerbonius, which was created in 1342, with reliefs depicting stories of the saint. On the right wall is a 15th-century fresco of Saint Cerbonius Accompanied by Ducks, while a Maestà attributed to Duccio di Buoninsegna (1316) can be seen in the chapel to the left of the major one, together with an Annunciation by Raffaello Vanni (17th century). The crypt houses small statues of prophets and saints by an unknown mid-14th-century Sienese sculptor, and a 15th-century fresco, Crucifixion with Saint Cerbonius and Saint Bonaventura of Siena. Sources External links Massa Marittima Cathedral interiors Romanesque architecture in Tuscany Churches in the province of Grosseto Roman Catholic churches in Tuscany Massa Marittima Cathedrals in Tuscany Massa Marittima