There isn't one specific term for people who study mountains, as the field of study can encompass various disciplines. However, depending on the focus, these people could be called:

* Geologists: They study the formation, composition, and structure of mountains.

* Geomorphologists: They focus on the landforms and processes shaping mountains.

* Glaciologists: They study glaciers and their impact on mountain environments.

* Climatologists: They examine the climate of mountainous regions.

* Ecologists: They investigate the ecosystems found in mountains.

* Mountain Guides: They specialize in leading expeditions and activities in mountainous areas, combining practical knowledge with an understanding of mountain environments.

* Mountain Researchers: A more general term encompassing researchers from various disciplines studying mountain phenomena.

Ultimately, the most accurate term depends on the specific area of study within the field of mountains.