Steve Duncan is an urban explorer, historian, and photographer. He has been exploring tunnels and other inaccessible underground places in New York since 1996. His photos have appeared in The New York Times, The New York Post, The New York Sun, Men's Journal, and others. In 2004 and 2005 he hosted the Discovery Channel show "Urban Explorers," and more recently has appeared on the History Channel as an expert on New York City's underground. He is currently a PhD Candidate in Urban History at UC Riverside, near Los Angeles, CA.