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How the Earth Was Made - Season 1 Episode 7 Great Lakes

Trailer
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.

First Air Date: Feb 10, 2009

Last Air date: Mar 02, 2010

Season: 2 Season

Episode: 26 Episode

Runtime: 45 minutes

IMDb: 7.60/10 by 8.00 users

Popularity: 12.803

Language: English