Explore these mind-blowing photographs of a tunnel being built beneath New York City

I can safely say that the idea of helping build an enormous tunnel beneath the cold, creaking mass of a city is probably my worst nightmare, but these photos kind of make it look okay. In a tunnel-in-the-making you’d be forgiven for confusing with the set of a Prometheus sequel, these men toil day and night to create a brand new tunnel underneath New York, as rigorously documented by the Metropolitan Transportation Authority. Behind-the-scenes shots are always appreciated, and when they’re showing people working hard to improve a city, all the better.