Monteregio di Massa Marittima D.O.C. covers the entire territories of Massa Marittima and Monterotondo Marittimo and parts of Roccastrada, Gavorrano, Castiglione della Pescaia, Scarlino and Follonica. Nine different varieties of wines are produced under this appellation in this hilly land.
Special attention is due to Vermentino, a white wine of distinctive character, and to two types of Vin Santo, one white and one red. The red Vin Santo is also known as Occhio di Pernice. It is a full-bodied and intense wine.