Walking along a ridge is read as balancing between two sides, with a wide view and little margin. It stands for a choice or a phase that asks for steady nerves.
Has this come up in your dreams before? What was going on in your life then?
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.