Mountain’s Edge is where Las Vegas ends for now. A large, bright-red balloon marks the sales office for a new development. New roads appear, and then they dig them up and pave them over again. Sprawl is uncreative destruction.

We find a tunnel to nowhere where the road cuts off and a sign prohibits motor vehicles from wending farther. People live here, or at least sleep here. In every Las Vegas neighborhood’s infrastructure and interstices is another neighborhood.