Abyss 
Often, an abyss is seen as a hurdle or something to overcome. Trying to avoid slipping into an abyss means you will overpower a current situation or problem. Tumbling into an abyss, on the other hand, can be viewed as a signal to use extreme care as trouble could arise in current business situations.
Ravine
A ravine in a dream represents a dark place where you hide your deepest emotions.
To be trapped in a ravine in a dream indicates that you are overwhelmed by your emotions and feel cut off from your friends. It might be time to reach out and overcome loneliness. It may help to discuss your secret feelings with others.
Black Hole
Dreaming of a black hole generally symbolizes fear, specifically a fear of disappearing or being forgotten.
Alternatively, dreaming of a black hole can also represent a place to put things you want to forget or erase, such as guilt, sadness, or other negative feelings.
Bottomless Pit
If you dream of a bottomless pit, you are feeling hopelessness and despair in your waking life. The bottomless pit may be indirectly referring to your conclusion and acceptance that an issue has overcome you and is never-ending.
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