William Langewiesche in Vanity Fair – “Deep below the streets of New York City lie its vital organs—a water system, subways, railroads, tunnels, sewers, drains, and power and cable lines—in a vast, three-dimensional tangle. Penetrating this centuries-old underworld of caverns, squatters, and unmarked doors, William Langewiesche follows three men who constantly navigate its dangers: the subway-operations chief who dealt with the devastation of Hurricane Sandy, the engineer in charge of three underground mega-projects, and the guy who, well, just loves exploring the dark, jerry-rigged heart of a great metropolis.”