![](http://www.alamy.com/thumbs/6/3531F3F0-CD98-4C2D-B5B3-C59F824D3026/TDHW14.jpg)
OVERALL VIEW OF MAIN LOCK, LOOKING SOUTHEAST (DOWNSTREAM) - Upper Mississippi River 9-Foot Channel Project, Lock and Dam 26R, Alton, Madison County, IL; Army Corps of Engineers
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Photo credit: © Tango Images / Alamy / Afripics
License: Licensed
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