What is a "wanderweg"? This directly translated is a hiking trail. And all over Switzerland these little yellow signs will direct you to destinations along walking trails and indicate how long it will take you to get there.
To be honest, I have only walked very few and definitely all under an hour, but you can imagine my joy when I spotted this souvenoir in Migros the other day - now this is one "wanderweg" that I do daily numerous times!
German = wanderweg
English = hiking trail