Aug 5, 2014 - 3:47 PM
You can have it done on the train, but I recommend to look for the conductor as soon as you have boarded and not wait for him/her to pass by. That's because this leg is included in your Swiss Pass, but technically it's only a valid travel document until it has been validated.
If you have plenty of time you can try it at the ticket office in Domodossola, but I don't think they can validate passes there so don't miss your connection while trying!
Last modified on Aug 5, 2014 - 3:48 PM by Arno