In The Sound of Music, the Von Trapps escape the Nazis and are seen fleeing over mountains. These mountains are supposedly well known to them and we're led to believe that they'll offer safe passage from the enemy.
However, the Von Trapps are living near the city of Salzburg. This is very close to the German border -- not the ideal escape route -- and it's otherwise a good 500km to Switzerland, which seems the only credible destination given its neutral status.
It seems plausible that they were familiar with the mountains around Salzburg, but not the entire route to Switzerland. Even if they did -- just for argument's sake -- it would be a perilous and long journey (they were on foot, I believe) for an experienced mountaineer; but they were a submariner (of a landlocked country), an ex-nun and seven children, the youngest of whom was only 5...which doesn't seem plausible, at all!
Were they therefore heading for somewhere other than Switzerland? If so, where and what protection did it afford them from the war?
(I realise The Sound of Music is loosely based on a true story which, presumably, makes more sense than the musical/movie.)