Human engineering is just a natural organic process.
Carbon Rock Wall Life
In this new world, microorganisms create interconnections on the rocky layers of our remains. From the simplest to the most complex, each gets its nutrients from the bacteria and fungi that degrade carbon. All it takes is a ray of sunshine, and a whole universe emerges from its dark depths to coexist on its surface. This fragment of wall is a hymn to life, an explosion of interactions in a harmony that only nature is capable of composing.