Hallways connect rooms without being rooms themselves, so they are read as transition — the time between one stage of life and the next. A long hallway that never ends speaks of a change that feels slow.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.