The Monkey Tree is a graphic substitution system rendering a maze of self-similarity. There is no user interaction. The system begins with a shape generator, defined by a series of points connected by lines. One by one, each line of the shape is replaced with a copy of the generator, scaled and rotated so that it fits just right. In turn, each of these news lines are also replaced until some maximum substitution depth is reached (in this case, the generator is substituted 6 times). The resulting form is fractal in nature, often similar, but sometimes wildly different than its shape generator.   figure a. changing just one point of the generator reveals new structure.     This project is based in part on Benoit Mandelbrot's Monkey's Tree discussed in the Fractal Geometry of Nature.           jtarbell, october 2003