How the Earth Was Made Season 1 Episode 7 Great Lakes 2009
7.6/10 by 8 users
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.
- Released: 2009-03-24
- Runtime: 45 minutes
- Genre: Documentary
- Stars: Corey Johnson
- Director:
