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Modern Marvels – Season 10, Episode 28: Full Cast & Crew Aired Sep 15, 2004 Documentary/History/Special Interest
The St. Lawrence Seaway is a monumental stairway in water, lifting massive ships hundreds of feet over thousands of miles; it's the world's longest inland waterway, a system of rivers, lakes, canals, dams, and locks that stretches 2,400 miles. TV-G Air Date: Sep 15, 2004 See TV Episode Details

Cast & Crew

All Cast Crew
Adam Richman Host Charlie Maday Executive Producer Gerald W. Abrams Executive Producer