alpenstrasse zillergrund in the south of austria

alp alpenstrasse alps arch ascend ascending austria austrian civil construction curve curves descend descending europe european fir firs green hairpin hairpins high landscape mount mountain mountainous mountains mounts natural nature outdoor outdoors outside panorama river road rock rocks rocky schlegeis shine slope slopes summer sunny swing swinging tree trees tyrol valley view ziller zillergrund zillergrafrac14 ndl