The Rise and Fall of the Great Lakes

The Rise and Fall of the Great Lakes is a 1968 Canadian short film featuring a humorous geography lesson in which a canoeist travels abruptly through time as he crosses the Great Lakes, experiencing cataclysmic changes in different eras. The film is narrated in ballad form.

The Rise and Fall of the Great Lakes was created by the NFB for the educational market, with working title Evolution of the Great Lakes. The film proved so popular with children and teachers in test screenings that the film was blown up tomm for theatrical distribution. However, Mason was disappointed when the NFB producer made several changes to his finished work, feeling he had lost creative control.

Source: Wikipedia