"In the middle of the night I crawled out of my tent into a silvery vastness truly unchanged since Genghis Khan and his hordes loped west more than half a millennium ago. There was no glow of city lights on the horizon, no ranger station at the edge of the next valley, no quaint general store, no paved road. There was nothing but space, unbounded and untamed. A brilliant moon lit the blackness crystal clear. Moonshadows of every blade of grass danced...