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.
Paraphrased from Elie Wiesel's THE OATH, an old man describes one of the characters:
He could gamble with his own suffering, but not with that of someone for whom suffering was not a game. He knew that nothing justifies the pain one person causes another. Any messiah in whose name people are tortured can only be a false messiah. It is by diminishing evil, present and real evil, experienced evil, that one builds the city of the sun. It is by helping those persons who look at you with tears in their eyes, needing help, needing you or at least your presence, that you may reach wholeness.