Olde Tyme Textbook Fractal

Back when I was young. not long after Gutenberg invented the printing press, a lot of textbooks had illustrations for everything from fossils to buildings to machines; many of them had the look of steampunk blueprints and such. If Benoit Mandelbrot or Steve Wolfram had been around back then, art courses might well have contained entries such as the one shown here. Created In Incendia, treated in and exported from GIMP.