Hollow 
To dream of something hollow refers to the womb and nurturing feelings. Hollow things can also represent a hidden secret or an empty box. Sometimes, it's a mere manifestation of your current emotions, perhaps that of unimportance, negligence, and emptiness. You need to understand that no one can fill that hollowness but yourself. Appreciate yourself and acknowledge what you have in life.
Quarry
To dream of being in a quarry and seeing workers within the perimeter symbolizes a long career of hard labor ahead.
To dream of an idle quarry represents letdowns, displeasure, or breakup.
Sinking
To dream that you or something is sinking implies that you feel overpowered by a situation, issue, or person. You may harbor emotions of unworthiness and unimportance. It is possible that you may be reaching the conclusion of a phase or period in your life. Pay attention to the item that is sinking and determine the symbolism of this item.
*See Drowning
.
Potholes
To dream of potholes indicates obstacles and challenges in achieving your ambitions. You may have to rethink how you conduct your affairs and approach them from a different angle. The dream also denotes that you are not doing well in some situations.
You may need to take a good look at changes necessary to achieve your goals.
Quicksand
To dream of being sucked into quicksand indicates you may be in an emotional bind in your waking life. An activity you are participating in is producing a feeling of judgment, whether of another person or yourself. This may be draining you of important life energy. There is courage needed to pull yourself free from the influences that are keeping you in this negative vortex of attraction.
To dream of pulling another person or yourself from quicksand is alerting you that you can turn around your situation now.
Depression
To dream that you are depressed suggests that you have difficulty making friends or networks. You can't see how the things you do affect all other aspects of your life.
Rattlesnake
To dream of a rattlesnake symbolizes your life journey and the passage of time.
Pandora's Box
To dream of Pandora's Box suggests a belief that you are dangerous or evil. A toxic belief system may be at play. You could be protecting yourself against intimacy because you may hurt your loved ones.
To open Pandora's box is a strong indication that you may need to seek help in opening your heart and may, in fact, be ready to do so.