Located on the slopes of Mount della Conserva, the ancient monastic village, attested since 1150 (traces of it are already found in the Camaldolese Annals), It included the church of Santa Maria di Mirteto, dependent on the monastery of San Michele in Verruca and subsequently by the parish of Asciano . Subsequently the church is also mentioned in a bull of Pope Gregory IX of 1227 and in a letter of Alexander IV of 1258.The bull assumes the presence of the Cistercian monastic community. The starting date of the Cistercian settlement is therefore certainly prior to 1227. In 1432 the abbey was almost completely destroyed during a local war and the monks moved to the abbey of San Benedetto di Portonorio. In 1812 the church of Santa Maria di Mirteto was still in good condition, as it was the private Oratory of the Ricci family. Currently the church and the monastery are in a state of neglect, after the last families who lived in the surrounding area have moved [2]. Although it has been abandoned for a long time, the complex still maintains its medieval layout, and in addition to the church there are substantial remains of the monastic annexes, of the rustic houses, of the granaries and of the oil mill. The church, with a single apsidal hall, dates back to the mid-11th century and retains some interesting early medieval sculptural decorations. From Passo di Dante it can be reached with path 121.