Bone Piles is an iteratively generated collection of simple organic shapes tied together with increasing complexity.
With each new instantiation, the bone is given unique attributes computed at random and according to the progress of the iteration. Both rotation and scale are set in this fashion. As a final, important step, the instantiated bone takes its shape from one of seven possibilities.
Arranging rock, plant, and bone in a computational space is easier to clean up

Over 7,000 bones arranged in 486 discrete piles