ST. LOUIS - More than 30 feet below the ground in Forest Park sits a system of tunnels critical to the wastewater system in St. Louis.

Those tunnels are part of the River Des Peres, where over four miles of its nearly 10-mile path sit beneath the city.

The river, which was created in the 1890s, slowly became a destination for everything a river shouldn't have. As the city was growing in the early 1900s, the smell and sight become increasingly unpleasant, especially for a major upcoming event---the 1904 World's Fair.

"Whether it was buckets at one point that people were throwing into a creek, eventually, people were piping into the creeks and streams around St. Louis and the Mississippi River. Wastewater treatment didn't exist," MSD Senior Public Affairs Specialist Sean Stone said. "A lo

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