The tundra is a vast, treeless biome characterized by permafrost (permanently frozen ground) and low temperatures. While many people associate the tundra with flat, icy plains, mountainous regions are also part of the tundra biome.

Here are some examples:

* The Arctic Tundra: This region includes mountainous areas in Greenland, Iceland, Northern Canada, and parts of Russia.

* The Alpine Tundra: Found on high mountain ranges around the world, even in tropical regions.

Therefore, mountains are an integral part of the tundra landscape.