COLLEGE STUDENT'S CRAPPY HOBBY: `SLUDGING' THROUGH SEWERS

COLLEGE STUDENT'S CRAPPY HOBBY: `SLUDGING' THROUGH SEWERS

PITTSBURGH (Wireless Flash) -- A college student in Pittsburgh, Pennsylvania, has a hobby that can only be described as "crappy" -- he enjoys crawling through city sewers. When 22-year-old Peter Sand isn't studying computer science at Carnegie-Mellon University, he's studying city sewers first hand by exploring the wasteland. Sand usually trudges through the sludge on foot, but sometimes he floats down the sewers in an old filing cabinet he's converted into a canoe. He says many sewers are water wonderlands featuring waterfalls and schools of slow-moving carp -- but he's also had his share of scares. One time Sands fell almost 80 feet while climbing a slimy ladder and, another time, he was swept away in a current of crap for three city blocks before he regained his footing. Sand's sewer adventures are detailed in the latest issue of "National Geographic Adventure."