General : Blue glacial ice.

Glacial ice often appears blue as in this picture of the Alaskan Mendenhall glacier from May 2011. The reason is that

Premium Photo General view of the perito moreno glacier in argentina

File:Blue Glacial Ice (15973605707).jpg - Wikipedia

Blue Glaciers, Blue Icebergs and the Antarctic Museum of Modern Art

Why is glacier ice blue?

Blue-ice caves, Nigardsbreen Glacier, Hiking, Jostedal

Why is glacier ice blue? - Woods Hole Oceanographic Institution

Blue Glaciers, Blue Icebergs and the Antarctic Museum of Modern

Why Is Ice Blue?

General : Blue glacial ice.