This is a powerful archetypal character aspect and a messenger from the unconscious, often thought of as the archetype of death. This image has its essence in anonymity and may therefore never be clearly known to you. As a character aspect, it is a figure from your unconscious mind that has the capacity to visit you in the dream state and deliver a message.
The context of the dream will tell you what the message is, or at least where to begin looking for it. However, if in your dream the figure closely resembles the commonly held visage of death—the cloaked figure without a visible face that roams the world snatching the living into the world of the hereafter—then you are definitely experiencing an archetypal dream.... Complete Dictionary of Dreams
This dream is exposing a mystery whose time has come to be faced, embraced, erased and replaced. Once you have done this, what was formerly hidden becomes integrated into your life, you become more powerful and peaceful, and the world around you will mirror back your integration and -acceptance. See Hermit and Integration Dreams.... Strangest Dream Explanations
Hidden things in dreams should be sought, caught and identified. They almost certainly represent something your conscious ego needs - probably some repressed function or quality. (For repression).... A Dictionary of Dream Symbols
The hidden figure in a dream always relates to a quality, character aspect, or skill set that has not yet revealed itself to you. Often a specter of fear, the hidden figure should be considered a positive element or a needed ingredient that you have yet to embrace.... Complete Dictionary of Dreams
To dream of a hidden passageway, indicates hidden power and your desire for inner exploration and self-discovery. Something needs to emerge from your unconscious - and when it does, you will discover new opportunities and increase your level of consciousness.... My Dream Interpretation
This is a universal dream about previously unknown or hidden resources.
A house or home of any kind represents the dreamer’s sense of self.
If you discover a room that you didn’t know was there, it is like finding a new aspect of yourself that was formerly unknown. This can be interpreted as something that is just becoming available to you, such as new thoughts, resources, or strengths that exist in you but were previously unavailable or untapped. What you find in a hidden room should figure prominently in your interpretation. Your association with anything you seek or discover should be considered as symbolic of a resource that you already possess but are just now able to utilize. Not all hidden room dreams are pleasant; some can be quite disturbing.
If this is the case, remember that if you find something troubling within your psyche, accepting and incorporating such shadow elements is crucial to facilitating integration.
If the room suddenly disappears, consider that the resource you counted on finding within yourself may not be as fully formed as you had thought. No matter what the sensibility of the discovery, this image is always an embodiment of the possibility that at any moment in life, more can be revealed.... Complete Dictionary of Dreams
(Boy; Enemy; Power; Snake; Troves; Unjust ruler; Woman) Ifthe treasure one discovers in his dream is hidden by a previous generation, it means receiving an inheritance, lawful earnings, a booty, a son from adultery, or it could represent an orphan because it comes from someone else’s earnings.... Islamic Dream Interpretation
In dreams of hidden treasure, something ordinary becomes something magical; sometimes treasure or something valuable is discovered in the most unlikely place. Such a dream involves the discovery of how you fit into the world and what special gift you have to offer; this process of discovery will not be answered immediately but will run the course of your life. Often the dream will be hinting that the way you don’t fit into the world will be your greatest strength. In other words, stop trying to change your essential nature and look closely at the things you take for granted.... The Element Encyclopedia
Psychological / emotional perspective: In waking life we become very good at hiding our emotions.
A dream in which we must make an effort to uncover something suggests we perhaps need to understand why we do this. When an object is hidden in dreams we may have to first give ourselves permission to reveal whatever it represents.
To find a hidden jewel perhaps suggests a hidden talent.... Dream Meanings of Versatile