The Great Lakes are the largest expanse of fresh water on earth. They are also the busiest water transportation route on the planet. No other continent has a waterway route into their manufacturing heartland. This film studies the past, present and future of this important geological formation. This educational video brings to viewers an incredible journey as we travel from the depths of Lake Superior to one of the largest underground salt mines in the world. An incredible journey.
©2008 / 50 minutes
Grades 6 to Adult / Ages 11 to adult

Available in DVD Format Only. No web streaming or digital rights are available for this title.