The geological processes, such as tectonic plate movement and volcanic activity, by which mountains are formed.

Alternative spelling of mountainboarding

The activity of climbing mountains, or scaling rock faces.

A Eurasian species of hare, Lepus timidus, found mainly in tundra regions.

A flat-topped mountain.

plural of mountain hare

(pathology) Rocky Mountain spotted fever

A subspecies of reindeer, found wild in southern Norway and Kola peninsula in Russia; Rangifer tarandus tarandus. A semi-domesticated variant is widely herded by the Sami in northern Scandinavia.

(medicine) Altitude sickness.

plural of mountain lion