
ABRAHAM LAKE, CANADA - JANUARY 4 : An aerial view of frozen Abraham Lake in the Canadian rockies is seen in Alberta, Canada on January 4, 2021. Trapped methane causes frozen bubbles to form under beneath Alberta's Lake Abraham. ( Mert Alper Derviş - Anadolu Agency )

ABRAHAM LAKE, CANADA - JANUARY 4 : An aerial view of frozen Abraham Lake in the Canadian rockies is seen in Alberta, Canada on January 4, 2021. Trapped methane causes frozen bubbles to form under beneath Alberta's Lake Abraham. ( Mert Alper Derviş - Anadolu Agency )

ABRAHAM LAKE, CANADA - JANUARY 4 : An aerial view of frozen Abraham Lake in the Canadian rockies is seen in Alberta, Canada on January 4, 2021. Trapped methane causes frozen bubbles to form under beneath Alberta's Lake Abraham. ( Mert Alper Derviş - Anadolu Agency )

ABRAHAM LAKE, CANADA - JANUARY 4 : Frozen Abraham Lake in the Canadian rockies is seen in Alberta, Canada on January 4, 2021. Trapped methane causes frozen bubbles to form under beneath Alberta's Lake Abraham. ( Mert Alper Derviş - Anadolu Agency )

ABRAHAM LAKE, CANADA - JANUARY 4 : A man walks on frozen Abraham Lake in the Canadian rockies in Alberta, Canada on January 4, 2021. Trapped methane causes frozen bubbles to form under beneath Alberta's Lake Abraham. ( Mert Alper Derviş - Anadolu Agency )