Watch Free Online HD Moviesjoy. At 3,798 metres, Austria’s highest mountain towers over a world in flux. Nearly 225 years after its first ascent, the Großglockner is now a focal point of alpine research. Rising temperatures shift habitats, sending alpine plants and animals on the move. Also for humans, the mountain’s face is changing, the recent closure of the Stüdlgrat due to rockfall is a stark reminder of the risks.