RD1091 - CHAMBON TUNNEL ROAD is closed from march 6th to december 15th, 2017. Except from july 13th to august 21st, 2017 from 5am to 9pm.
Please take the "rescue road" (5.30km on the left side of Chambon lake).
Les 2 Alpes access from Grenoble still possible!
Les 2 Alpes access from Italy is possible via Frejus Tunnel too.
HAVE A NICE TRIP!