sentences:  Nearly 4 million litres of wine is produced under this appellation, 62% of it red.The wine regions of the Left bank of the Gironde estuary are bordered by large coniferous forest land that have a tempering effect on the maritime climate of the area.The region spans the left bank of the Gironde from the mouth of the river to the city of Bordeaux and includes the four famous communes of St-Estephe, Pauillac, St. Julien and Margaux.