Major works to the railway line between Chamonix and Argentière not completed on schedule due to heavy snow and freezing temperatures in late November and early December 2012.
Over the Christmas holidays, no train services between Chamonix and Argentière.
Chamonx & Argentiere has a high frequency Bus Service in peak season. No information concerning increased frequency to further compansate for the loss of the train service.
No available revised completion date for the works to the railway line. Expected to remain closed into the New Year
Source Radio Mont Blanc