One day a young man finds himself walking along a hill in the rain. he comes across a valley that he finds familiar. he wasn't looking for it but he found it.
He remembers this scene exactly. though it had been twelve years, he sees it as it is. a barren wasteland in the rain.
the man sees a horse running in the rain. he picks up some rocks because the horse looks suspicious. he describes it as a thin black horse.
the man keeps walking towards the farm house he knows is just over the ridge. He sees the horse again and its waiting for him.the horse attacks so the man throws several stones at the horse to stop it.
later the man sits under the barn thinking, the encounter with the horse has him pretty shaken up. then the man sits up knowing he has forgotten something.