French Prime Minister Manuel Valls disembarks an Helicopter in Mont-de-Lans during his visit to the Isere and Hautes Alpes regions on July 24, 2015, to talk about problems caused by a landslide above Lake Chambon and the Chambon tunnel linking Grenoble to Briancon. The road linking Grenoble to Brian?on, by the Lautaret pass in Mont-de-Lanshas been closed since April 10 due to tunnel damage and the risk of major landslide. AFP PHOTO / JEAN-PERRE CLATOT