Alpine lake water from the fastest melting Pasterze glacier at the foot of the Grossglockner Mountain in the Austrian Alps, Drone shot

aerial pasterze glacier lake melting grossglockner mountain fresh water austria surface eastern alps summer landmark geography fossil fuel oldest rock formation climate boiling climate change greenhouse gas el nino evolution earth retreating alpine daylight valley glacier himalayas longest flood ecosystem habitat global warming carbon emission deglaciation climate crisis geohazard water pollution biodiversity austrian basins supraglacial high tauern national park cloudy vegetation