Grenades in the French Alps: Protesters clash with police over world's longest tunnel – video

Protesters clashed with policein the Maurienne Valley, south east France on Saturday, as they demonstrated against a tunnel being built through the base of the Alpine range that separatesFrance and Italy. The protesterswere attempting to reach a site where drilling has already begun on whatwillbe the world's longest tunnel, but were blocked by police.

The protests were led by Les Soulevements de la Terre (Earth Uprising) - an umbrella group of several different environmental activist associations across France. On June 21 the French government dissolved the collective claiming their actions were violent and led to material damage. Lawyers for Les Soulevements de la Terre immediately announced their intention to file an appeal