Alien world under Austria's doomed glaciers tells tale of their collapse

Alien world under Austria's doomed glaciers tells tale of their collapse

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, inspects a piece of ice inside a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021.

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021.

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021.

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021.

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, enters a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021.

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the ceiling of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021.

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explore a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect a crack in the ceiling of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explore a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the ceiling of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

A general view of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Switzerland's Roger Federer celebrates after winning his semi-final match against Spain's Rafael Nadal. REUTERS/Hannah McKay

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, hike towards the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, stands at the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologists Andrea Fischer and Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, inspect the entrance of a natural glacier cavity of Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Martin Stocker-Waldhuber, from the Austrian Academy of Sciences, explores a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner

Glaciologist Andrea Fischer, from the Austrian Academy of Sciences, hikes towards the entrance of a natural glacier cavity of the Jamtalferner glacier near Galtuer, Austria, October 15, 2021. REUTERS/Lisi Niesner