Shelly’s novel responds to the notion of the “sublime,” central to Romanticism, that nature can inspire and reflect the human soul. I quote here from an excellent discussion by Heather Mah on the topic of landscape in Frankenstein. “Mary Shelley made use of the landscape to communicate Victor's fluctuating mentality. Because he has successfully cross over the boundary separating God from man to bring something inanimate to life, Victor has removed himself far from ordinary human-kind. He now possessed an unearthly power that sets him apart from his fellow human beings. Thus, unlike ordinary humans who find picturesque landscapes awe-inspiring, Victor finds such landscapes indifferent and incapable of curing his troubled mind. Rather he can only identify with enormous, sublime landscapes because these are the only landscapes great and powerful enough to take his mind away from his problems and to offer him some sort of comfort in his present unstable state.” She provides a fuller discussion on the topic at the url listed below.