susten pass on swiss alps with wild flowers alpine sweetvetch, alps rose and an swollow tail butterfly

alpine alps beautiful beauty biodiversity bloom blossom colorful environment europe fauna flora floral flower focus stacked stacking glacier green hiking landscape mountain mountains nature pass plants red rose des alpes schweiz season stein steingletscher summer sustenpass swiss switzerland vegetation wild wildlife swallow tails susten flowers sweetvetch hedysarum hedysaroides rhododendron ferrugineum swollow tail butterfly foreground alpen