If you back out far enough to see some of the shape the atoms are forming, you are too far away to see them. So I made them reflect a common tree. And like looking at shapes in the clouds, it's easy to see things in the tree as well.
This turned out to be much more difficult than I thought. I wanted it to be a view from inside an ant hill, looking down several tunnels at once. But since you can only point the camera one direction at a time I had to opt for a more cavernous approach.