Definitions:

1. A large expanse of ice covering a highland area, that forms due to the accumulation of snow over many years, which eventually gets compressed into ice. NOUN
   • The Patagonian Ice Field in South America is a major source of glacial meltwater that feeds into nearby rivers.
2. A large, expansive area of interconnected glaciers and ice, usually found in polar regions or high mountainous areas, covering a relatively flat or undulating landscape without a central dome. NOUN
   • The Columbia Icefield in the Canadian Rockies is one of the largest ice fields in Norht America.

Synonyms:

• frozen plateau
• glacial plateau
• ice expanse
• ice mass
• ice plain
• snowfield