I've read that the CZ goes through 29 tunnels on its route. One is even 6 miles long. I am wondering if there could ever be a problem with an avalanche occluding a tunnel entrance or exit. I know there's not a lot of snow out there in the mountains right now, but winter isn't over by any means. A morbid question, I know, but it crossed my mind and now I'm wondering...since I will be on this train in a few weeks, please reassure me!