Here is a blog article which contains a stream of photos picturing one largest moveable man made machine in the world. Apparently it is an open mining machine in Germany. The article talks about how they had to move it from one mine area to another and it can only move in a straight line so they had to drive it over roads and train tracks. Once it got to the new mine it had a mishaps where it got a bulldozer caught in it's giant mining wheen (pictured).
Check out all of the photos of this giant man made machine for yourself after the jump.