The falls.

  The north shore of Lake Superior in Minnesota is formed from volcanic rock; the last few feet (relative speaking) can create some amazing scenes, mainly in the form of waterfalls.  At one point I saw a sign stating we were only 750 feet above the lake, yet we were less then a mile from the lake.  This mean you can go from a calm stream to a raging torrent in the matter of a few feet. 
This set of falls was amazing, in that the falls on the left never filled up the hole it was falling in.  Several falls were sorta isolated creating an almost magical effect.  Double, and more, fall were common.  Do you think they were using logs to keep the wall from closing in? 
This last one was from the eastern most falls on the trip, the land on the right is Canada, and on the left is in the USA.

Sorry that I can’t properly identify all these falls, but after awhile, even if they are different, they all start to look the same.