Jun 8, 2018 - 6:17 AM
in reply to PaulSim
Those aren't rail lines, but rather train types.
You can see which routes are covered by the Swiss Travel Pass using my link above and clicking the "where it's valid" tab. You'll see a PDF map there to open.
You can travel via Domodossola and Brig or via Göschenen/Andermatt and Brig - whichever train type you are on doesn't matter (RE = regional train, IC = InterCity train etc).
Last modified on Jun 8, 2018 - 6:17 AM by Lucas