A tunnel incarnates your interior world. For this reason, if you dream of a tunnel in which there is only darkness, it means that you should pay attention to your feelings to get out. Your existential distress is keeping you from seeing the light. If, in the end, you are able to glimpse a flash of clarity, it indicates that you will overcome the obstructions on the way through your strength of will. Your conscience is amplifying your range of action. (See light , black , and bridge )
Gallery of dreams
Do blind people dream?
Dreams in blind people depend on the nature of their blindness. Individuals who have born blind will not have visual dreams instead they have night mares, most of them revolving around their challenges faced during the day. They experience dream through their sensory inputs like touch, smell, noise and emotions. People who were blinded after birth can experience visual dreams based on the visions or images that they have seen.
Some people can recognize dreams while sleeping; this type of dream is called lucid dreaming. Most of the people would have experienced this type of dream atleast once in their life. You can actually control these dreams. One of the popular dreams that most of us experience is as flying in the sky; you can try lucid dream by imagining your house beside the flying aid.