hiking trail to grossglockner mountain glacier. austria. summer

austria grossglockner path mountain summer pasterze hiker alpine park nature national view landscape travel europe alps high glacier peak hochalpenstrasse hiking green scenic range road panoramic blue tourism scenery rock cold trail mount hike group climbing environment european forest grass trekking hill light mountains outdoor outdoors panorama pass sky street climber tirol holiday mountaineering mountaineer tauren rocky valley above aerial austrian climate destinations extreme geology height hohe ice