Not all of the weird ice is in the river. These interesting ice features developed on the wheels of our truck during a long drive to Fort McMurray, Alberta for breakup 2000. It was particularly interesting that the ice on each wheel had such a distinctly different shape.
(Photos by UofA River Ice Group: Nikon E950, Photo 1: f/8.1, FL 10 mm, 1/505 sec. exposure; Photo 2: f/9.1, FL 13 mm, 1/385 sec. exposure)