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In the alps - if you want to get from one valley to another - you have to drive through a tunnel. But if you want to have some nice and lovely pics on your rolls after crossing the mountains, enjoy a ride over a pass - for example the Flüelapass in Davos.
An almost forgotten area in the Grisons in Switzerland: The Schatzalp in Davos. Once a well known ski area, then closed for years and the only highlight: the historic hotel. But I have explored this spot for me again.