When scientists talk about the cryosphere, they mean the places on Earth where water is in its solid form, frozen into ice or snow. Read more ...
Cryosphere Glossary
crevasse
open fissure in the glacier surface.
Explorers examine a crevasse on Lyman Glacier in 1916. (Photo courtesy of the United States Forest Service. Archived at the World Data Center for Glaciology, Boulder, CO.)