It is not the entire labyrinth, only some of its rooms. I clearly see the Minotaur though Dick doesn't particularly. The rooms contain all manner of creatures and objects to delight or horrify. Hopefully the humor of it will prevail. The beginning shapes were a bit different this time but the process was unchanged.
I promised to show the way I start these drawings and took photos of the very first steps. With pencil I draw a rectangle then divide it into shapes. I create variations on them to work with later. Then I select lines to draw in pen and begin to draw in the shapes. I use many of the pencil lines to augment the drawing. Don't forget to click on the image below to see the steps a little larger.