Back in April of 2008, Anna Sklar, the author of "Brown Acres, an Intimate History of the Los Angeles Sewers," took Off-Ramp host John Rabe underground into the longest sewer line in the country. Here's the three-part interview from the Off-Ramp archives.

Anna Sklar, author of "Green Acres: An Intimate History of the Los Angeles Sewers." She's standing in the North Outfall sewer, a huge line that runs under the Fox Hills Mall.
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John Rabe
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