Hi, we had a very good topo from the SAC Topoguide Valais. Iirc the most important information was also in English. You can probably find the book in most local bookshop, mountain guide offices or book shops. Another great source of information with a picture topo was inside Ben Tibbets Alpenglow book, which I would recommend to everyone stoked for these routes. Sadly I don‘t have any online topos I could send you.
@@tiborkarcz I‘m glad I could help you :D I also have a longer English video regarding that trip. Called 10 days in Switzerland. Maybe it can give you some more information and other route recommendations.
