On Aug. 12, crews working on a large-scale drain project in Michigan's Kent County discovered 11,000-year-old mastodon bones. 

"Over the next year, year and a half, we're going to slowly dry the bones out," Cory Redman, a science curator with the Grand Rapids Public Museum, reported to local television station WZZM. 

Watch the full story below and check out the images on www.wzzm13.com.

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