I need figures of speech in this poem Lofty mountains that pierce the clouds and reach to dizzying heights may appear to us humans as coldly majestic, lonely, even forbidding. Yet to a great variety of wildlife they constitute home.

Personification

Explanation:

Personification is giving human attributes to inanimate objects or things.

From the poem, mountains are described as being "lonely" and "coldly majestic".

A mountain is an inanimate object that is shown to have human attributes such as loneliness.