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Matt Damon Gets Down and Dirty in "Elysium"

Gary Gershoff/Getty Images(NEW YORK) -- Matt Damon got his hands dirty for his new role in the sci-fi flick Elysium, opening Aug. 9.

On Wednesday's Live with Kelly and Michael, the Oscar-winning actor said during one scene, he had to film for two weeks in an enormous garbage dump.

"It was actually the second-largest garbage dump in the world," he explained.  "And there was one location that was actually nicknamed Poo River."

That's not all -- he also said during another scene, the rotor wash from a helicopter was the least of their worries as the cast was "told that the dust is actually fecal matter."

"And you look around and all the crew are wearing gas masks," he continued laughing, "...And you and the other actors are like, 'We're actors!'"

Still, Damon said the film is not only packed with action sequences -- it also has a message.

"It's [set] 150 years in the future and basically Earth has become a third-world planet and all of the super-wealthy people have moved into this space station that kind've hovers above Earth and left the rest of us on Earth looking up, wishing we could be there," he explained.

Elysium also stars Jodie Foster.

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