There isn't one single name for a huge area of land. The term you use depends on the context and what you want to emphasize. Here are some options:

General Terms:

* Vast expanse: Emphasizes the sheer size.

* Large tract: More formal and precise.

* Wide area: Focuses on the breadth.

* Region: Refers to a specific geographical area with unique characteristics.

Specific Types of Land:

* Continent: The largest landmass on Earth.

* Subcontinent: A large landmass that is part of a continent.

* Plain: A large, flat area of land.

* Plateau: A large, elevated area of land.

* Desert: A large, arid area of land.

* Forest: A large area of trees.

* Prairie: A large, grassy area of land.

Other Terms:

* Domain: A territory under the control of a particular ruler or government.

* Realm: Similar to domain, but often with a more poetic or historical connotation.

* Territory: A specific area of land under the jurisdiction of a particular entity.

The best term to use will depend on the specific context and what you are trying to communicate.