One of the main themes of the story is Man Vs Nature. Rain in particular, plays an important role in developing this theme. Throughout the story we notice that how much annoying the rain is for the man. He continuously tries to find shelter, and few times he scrubbed and rubbed off the mud on his grey suit, and he also squeezed the water out of his trousers/pants. So all of this is showing his struggle against the nature. Rain was definitely representing nature in the story and the man was fighting against it. So man's relationship with nature is shown by his struggle against the rain. Other than that, the horse(obviously), the trees and the twigs etc all represent nature.
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