In reply to JuneBob:
The Adlerpass is on the normal Haute Route from Saas Fee to Zermatt. You can do it in a day, or you can spend a week doing the peaks on the way, using the Britannia and Monte Rosa huts: Alphubel, Allalinhorn, Strahlhorn, Rimpfischhorn, Cima de Jazzi, Dufourspitze & Signalkuppe (Monte Rosa), etc.
Steve