Raked gravel and still stones are read as a mind seeking calm and order. Tradition sees the Zen garden as simplicity, attention and the space that remains when clutter is cleared away.
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.