Rare Photos Of NYC Underground In The 70’s And 80’s A.K.A “Hell On Wheels”

During the late 70's and early 80's, New York City's subway system was one of the most dangerous places a person could be. Lucky for those of us who never had the chance to see it, Swiss photographer Willy Spiller was there, and the dark and atmospheric series of photos he took has now come to be known as Hell On Wheels.