This is the conductor for where things flow. In this sense, it could symbolize a means of obtaining richness or intellectual growth. If you see yourself inside a tube, on the other hand, the meaning is very similar to that of a corridor: You are in a time of transition. The path could end well or poorly, depending on the feeling that you experience in the dream.
Gallery of dreams
Our brain can remember loads of images we see everyday. These images are stored by a part of the brain. When we are reminded of the incident or the person, our brain reproduces these related thoughts in the form of images. Some people with extra sensory perception experience dreams about future. They can predict the future through their dreams. To experience a pleasant dream, always go to sleep with positive thoughts. These thoughts not only induce good dreams but also give you a fresh start in the morning.