Soo Locks. Crew member on a boat tour of the Soo Locks, Sault Ste Marie, Michigan, USA, tying up his boat in the MacArthur Lock. These locks on the St. Mary's River enable shipping between Lake Superior and the lower Great Lakes. They are operated by the US Army Corps of Engineers, and raise or lower ships 21 feet. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / West, Jim |
Bildgröße: | 6720 px × 4480 px |
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