the drawing is to illustrate altered states of mind. It sugests the exploration of yourself, knowing yourself - it expands the mind - for it to "be" it is needed for the mind to expand.
darkness is space that we don't usually see anything in, it symbolises our basic mind. however there is allways something there - most of us can feel it some of us can not deny it. this artwork suggests to see where you dont usually look and turn the darkness to a new space of awareness.