How does Stephen King use imagery in The Waste Lands?

Imagery:

"He felt like two men existing inside one skull. Each man had his own set of memories, and when they began to argue, each insisting that his memories were the true ones, the gunslinger felt as if he were being ripped in two."

"The war had originally been the harriers and outlaws against a loose confederation of artisans and "manufactories" who lived in the city. The residents had decided to fight instead of allowing the harriers to loot them, burn their shops, and then turn the survivors out into the Big Empty, where they would almost certainly die."