Working below the streets with what others throw away is read as facing the unpleasant parts of life. Tradition sees it as cleaning up hidden emotional waste.
When this appeared in your dream, what were you feeling?
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.