We stand on the mountainside and see an immense change in Isengard. Orthanc appears now to be the centre of a dark new empire. Saruman seems to be a new and powerful master, himself to be feared. It looks like S aruman gives the orders.
If we would tilt our head to one side we see the real secret of Isengard. Saruman is no master but a servant. His new environ reveals this secret at once.....Saruman's power is an illusion for Isengard is now the earthly imprint of the eye. The treasoner Saruman is but the agent of the great eye.