The Three Forest Cantons that would eventually become Switzerland, early 14th century: the St. Gotthard Pass is the main north-south artery through the Alps. It's guarded by the merciless Governor Wolfram in the service of the invading Austrian Hapsburgs, and nobody can cross the border without a thorough interrogation. This impregnable fortress is called Wolfsmund, the "Wolf's Maw." Try as they might, the rebellious people of the Cantons reach for the "Maw", and lose life and limb repeatedly. Is this "impregnable" fortress really impregnable? Can the "Wolf's Maw" be defanged? Here is...