Thomas Wolfe’s novel You Can’t Go Home Again has become a catchphrase, a metaphor of the impossibility because people and places inevitably change. After six decades of three annual trips to the Sierras, I then entirely missed three years, for various reasons. So I eagerly expected a great return to my beloved Rock Creek above Tom’s Place. A relatively minor change in my favorite camping spot should have brought Wolfe’s line to mind on greater changes. It did…