Cobblestones are read as history underfoot and a path walked by many before you. Their unevenness can stand for progress that is slow but solid.
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.