STEVE DUNCAN is the undisputed king of urban explorers. Granted, it鈥檚 a small club, a cultish group of city dwellers who鈥檝e been spelunking through subway tunnels and climbing suspension bridges for more than a decade. But Duncan, 33, has drawn new eyes to the quixotic, and generally 颅illegal, pastime thanks to 颅Andrew Wonder鈥檚 short film Undercity, which captured Duncan鈥檚 forays into Manhattan鈥檚 underground infrastructure and took home the Director鈥檚 Choice Award at Mountainfilm in Telluride last May. Since the film appeared, Duncan, who started exploring New York City tunnels while an undergrad at Columbia University, has been featured in The New York Times, on NPR, and on NBC鈥檚 Today show. More impressive, the photographer and public-history master鈥檚 student has made a living from his passion, selling images of his expeditions and lecturing at places like the Explorers Club. 鈥淭he underground is one of those things everyone wants to learn more about,鈥 says Duncan, a wiry Maryland native. 鈥淏ut not everyone is willing to spelunk a sewer.鈥 This fall, Duncan sets off on his most ambitious project yet: a three-day odyssey through the 124-mile catacombs beneath Paris. 鈥淭raveling from ancient catacombs to 19th-century sewers to modern subways will show how the entire history of the city can be told through its under颅ground infrastructure,鈥 says Duncan. It also requires safety gear. To cope with the Paris sewers鈥 smelly, germ-infested waters, Duncan is bringing hip waders, puncture-resistant gloves, and a helmet鈥攖o keep the cockroaches out of his hair.
View from NYC's Roosevelt Island

London's subterranean Fleet River

Columbia University steam tunnel

Los Angeles's Ballona Creek Tunnels

Beneath Gotham

New York's Old Croton Aqueduct

The Neglinnaya River, below Moscow
