What is it...???

I recently had the fortune to do some work up north, and on the way back I dropped into Broome to see my best buddy Nicholas and Justin.  On the way to Broome I was intrigued by all the forms, texture and complexity of the landscape beneath me.  So as usual I spent most of the trip pressed up against the window trying to capture decent images.  This one though I like.  It looks to me like a repeating form of nature.  Is it a slide of a kidney, and blood vessel network in the brain, or what?  Enjoy.