PARIS, June 17 (Reuters) - Twelve police were wounded on Saturday in clashes with demonstrators in France's Savoie department where a protest against a high speed rail project in the Alps turned violent, authorities said. Some 2,000 protesters, including a roughly 300-strong dark-clad hardcore, were in the Maurienne Valley objecting to construction of a rail link including a tunnel between Lyon and the Italian city of Turin. Association Les Soulevements de la Terre contested that figure in a Twitter post late on Saturday and said 50 demonstrators were wounded, including six who were hospitalised