Jean-Claude Mas acquired this estate in 2006. Located in the commune of Montagnac in the lower Hérault valley, this estate once housed the sheepfold of the Cistercian abbey of Valmagne. It is located near one of the few springs from which it takes its name. The estate has known several owners, the penultimate of whom converted the entire vineyard to organic farming in the early 1990s. It covers 55 hectares of which 36 are planted with vineyards and 5 with olive groves and its more than 200 species of bees. Mas des Tannes is in a privileged location with hilly terrain protected by pine forests and Mediterranean scrub, cradled by the Mediterranean climate (9 kilometers from the sea) and the healthy north wind, all at an altitude of 120 meters. The clay-limestone soils are rich in organic life in the exuberant subsoil, which has never known any synthetic products. The vines are naturally hardy and vigorous, the fruit concentrated and healthy, the wines balanced and majestic.