2 Season
26 Episode
How the Earth Was Made - Season 1 Episode 7 Great Lakes
Scientists seek clues to the formation of North America's Great Lakes, the largest expanse of fresh water on the planet; delving into an underground salt mine; investigating a fossilized coral reef; diving to the bottom of Lake Superior.
- Year: 2010
- Country: United States of America, United Kingdom
- Genre: Documentary
- Studio: History
- Keyword: natural history, interior of the earth, planet earth
- Director: Susan Werbe, Stuart Carter, Stephen Marsh
- Cast: Corey Johnson