Miru Kim is an incredibly inspiring photographer and film maker. I discovered her on a TED talk in which she discusses her underground photography.

http://www.ted.com/talks/miru_kim_s_underground_art.html

Miru Kim is a fearless explorer of abandoned and underground places. Her photography underscores the vulnerable nature of the human explorer in these no-woman's-lands.

She has a love of the new and unknown. In her best-known body of work, the Naked City Spleen series, she investigates left-behind industrial spaces, infiltrates them with her camera, and then photographs herself in the space, nude. Like Wallace Stevens' jar upon a hill, the presence of her small body brings these massive, damp and dirty, unknown spaces into a new focus. 

Check out the entire series: 

http://www.mirukim.com/nakedcityspleen/sugar.html