Take caution, you may be being warned of upcoming danger or loss in the near future. Read and reread before signing anything. Be especially attentive to any loopholes either written or verbal. Watch for any large potholes or the like when driving (or walking). Are you involved in a non-ending situation, relationship, etc.(or about to become involved in one)? You may receive an invitation or opportunity to experience adventure (possibly one with danger involved).
If the dreamer falls into one, a caution is being given not to get involved in something that will cause you misfortune. It could be of a personal nature.
If the dreamer does not fall, but explores into the abyss, it is an indication that unconscious/subconscious matters are trying to come to light to be released from the dreamer. They are seeking resolution and completion so peace may be gained in those areas. Also - This is an obstacle dream.
If you avoid the fall, you will overcome your difficulties; however, if you fall into the abyss, it is a warning that you must be extremely careful in your business dealings. ... The Bedside Dream Dictionary
Devoted to gambling, casinos in dreams suggest making a game of life, in which the chances you take can have a very direct connection with real events. The image can also represent competitiveness and the desire to win at all costs. Being placed in a casino within a dream refers to the risktaking qualities that you possess.
If you are normally a passive person, the dream may be a sign that you should take a chance in your life.
If you already live on the edge, the dream may suggest that you should make more careful decisions instead of relying on chance. What you are doing in your dream casino can indicate how you are playing the game of life. Are you playing recklessly and with no thought of the morrow, are you playing by the rules or are you seeking to exploit loopholes in the rules? All this can be seen as a comment on real-life situations, such as starting a business or new job. See also Gambling entry in LEISURE.... The Element Encyclopedia