This picture is of a barge tow. It's kind of hard to see, but if you look closely you can see one tug boat pushing the whole thing. The barge tow is actually 3 barges wide and 5 barges long. That's 15 barges hooked together - 90 feet wide and 1,000 feet long. Together they hold as much cargo as 870 semi trucks, which is amazing! 60% of the nation's grain travels along the Mississippi River. You can see some water lilies coming up in the foreground.