Massa Marittima (Latin: Massa Veternensis) is a town and comune of the province of Grosseto, southern Tuscany, Italy, 49 km NNW of Grosseto. There are mineral springs, mines of iron, mercury, lignite and copper, with foundries, ironworks and olive-oil mills. In Follonica, on the coast, there are furnaces where the iron ore of Elba is smelted. History The territory around Massa Marittima was inhabited since prehistoric and proto-historical times, as evidenced by numerous finds dating from the Paleolithic to the Bronze Age. Etruscan settlements have been found in the area of Lake of Accesa and others dating from the 9th to the 5th century BC. Further proof of the existence of a settlement in the place where Massa Marittima is now comes from the Res Gestae by Ammianus Marcellinus, where a Massa Veternensis is cited as the birthplace of Constantius Gallus, nephew of Constantine; this town can be identified with the village of Massa Vecchia. The name Massa appears for the first time in a document of the 10th century AD on a list of castles and courts sold to the cleric Ropprando by Lambert, Margrave of Tuscany, on April 18, 973 and subsequently repaired by Ermengarda, widow of Lambert, on February 15, 986. In the 11th century began the gradual transfer to Massa Marittima of the episcopal seat of Populonia, which had been looted by pirates and destroyed by the fleet of Nicetas, Prefect of Constantinople: a letter from Pope Alexander II to Bishop Tegrin of 1062 testifies the transfer of the bishopric to Massa. The city reached the peak of its splendor in the years when it became free commune (1255-1337), with a great urban expansion including buildings still visible today. From May 1, 1317, for a period of at least a year, the city also had its own currency. Massa fought alongside Siena in the battle of Montaperti (1260), and in three leagues (1276, 1307, 1319), after being subjugated by it in 1335. The Sienese exploited the economic potential of the city, weakening it substantially. Plagues (the most severe in 1348 and 1400) and demographic downturn brought the city to a deep decadence, as well as the insalubriety of the place, since Siena did not perform any reclamation works in the whole Maremma. In 1554, during the war between the Republic of Siena and Duke Cosimo de' Medici, the Massa fortress capitulated, besieged by the Spaniards led