During an ice age, large ice sheets expand on Antarctica and glaciers grow globally. This causes sea levels to drop significantly as massive amounts of water are stored on land in the form of ice. An artist's impression depicts what Earth may have looked like during the peak of the last ice age with expanded ice sheets and lower sea levels than present.

1. An artist's impression of ice age Earth at glacial maximum. Based on: Crowley, T.J. (1995). "Ice age terrestrial carbon
changes revisited". Global Biogeochemical Cycles 9 (3): 377–389. Bibcode:1995GBioC...9..377C.
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2. The Antarctic ice sheet. Ice sheets expand during an ice age.
This marker indicating the sea level is placed on the path from Jerusalem to the Dead Sea.