To dream about a hallway represents the initial steps of a new journey. You will uncover your unknown true desires. This indicates a spiritual quest, but can also take on physical and emotional aspects as well. This is usually a sign of a changing aspect of your life.... Dream Symbols and Analysis

There is not much significance to a hallway other then denoting an abnormal period of worry and concern, so this dream should be interpreted using the other symbols in the dream and reserving hallways under, ‘worries’.... Encyclopedia of Dreams