The highest point of the Arno Trail is atop the Sonnblick near Bad Gastein which is situated in a high valley of what mountain range?
Arno Trail: The Arno Trail (German: "Arnoweg" ) is an approximately 1200-km long-distance trail through the Austrian Alps. Bad Gastein:  Picturesquely situated in a high valley of the Hohe Tauern mountain range, it is known for the Gastein Waterfall and a variety of "Belle Époque" hotel buildings.
i don't know