PARIS (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. They threw rocks at riot police, who responded with tear gas, and one demonstrator was wounded, local prefect Francois Ravier told a news conference.