Fig. #1. The physical level of The Earth Experience. To get there, Man had to pass through the Double-Gates which separate two adjoining levels of experience. In this into Earth. Each are said to be two faces of the same door. To some, they are the opposite sides of the same bridge that spans the river Styx--the source of all illusions. They are, in fact, the two sides of the Double-Gate leading into and out of the Earth Experience.