Just seen this:
http://www.themodernantiquarian.com/post/8147

and it made me realise why I like lichen on stones. It could be a satellite/aerial photo. Now is that fractal or what. Love it!

I tell you, this level of morphic resonance extends to your brain, quite literally. If you get thin slices of cerebrum and stain them correctly, they are equally evocative of landscapes viewed from above.

(It's not a satellite photo is it?)