Dreaming of a cliff represents a threat or a feeling of vulnerability.
Also see Heights.
Standing on the edge of a cliff could be a frightening, but at the same time an exhilarating experience. Dreaming about cliffs generally indicates that the dreamer has come to a point of heightened understanding and awareness.
An increase in the level of consciousness may have occurred.
Through hard work and perseverance, the dreamer may have reached a vantage or plateau of understanding.