Well Dream

I am viewing a very large and completely white room. In the center of the room is an old brick well, painted black. Thick black tree roots are growing from the bottom of the well, radiating outward in slow, pulsating movements. They suck on the floor of the white space, absorbing unknown nutrients. I am conscious that I am sleeping, and I have the feeling that these roots are a psychic parasite that is feeding on my mind while I sleep. I start to wake up, and as I do so I see the black roots quickly rush back into the well.