The spiritual function of fierce terrain (in the apophatic tradition) is to bring us to the end of ourselves, to the abandonment of language and the relinquishment of ego. A vast expanse of jagged stone, desert sand, and towering thunderheads has a way of challenging all the mental constructs in which we are tempted to take comfort and pride, thinking we have captured the divine. The things that ignore us save us in the end.
The lesson which life repeats and constantly enforces is "look under foot." You are always nearer the divine and the true sources of your power than you think. The lure of the distant and difficult is deceptive. The great opportunity is where you are. Do not despise your own home and hour. Every place is under the stars, every place is of the world.