I've seen the movie Dark Days so I'm not entirely ignorant to the concept of people living in abandoned subways and tunnels underneath cities but I was unaware of a system of flood tunnels underneath Vegas that people were residing in. This article does a pretty job of profiling a few of the residents that have set up there. It's compelling because it's people living in tunnels but it's accentuated by the fact that they are flood tunnels so there is always a layer of water underfoot.

via soup soup.