Can you discus the extended metaphor writing as excavation by Stephen King?

Stephen King often describes the writing process as excavation, where the writer's job is to uncover the story that already exists beneath the surface. He believes that the story already exists in the subconscious mind, and the writer's role is to unearth it by digging deeper. Through this extended metaphor, King emphasizes the importance of patience, persistence, and keen observation in bringing a story to life.