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The Great Lakes were formed during the last ice age, which ended about 10,000 years ago. Watch the video below to learn how glaciers shaped the land.
The Great Lakes were formed during the last ice age, which ended about 10,000 years ago. Watch the video below to learn how glaciers shaped the land.
The ice sheet had eroded the land, leaving older layers exposed.
The ice sheet had eroded the land, leaving older layers exposed.
Image from The Great Lakes: An Environmental Atlas and Resource, USGS, Public Domain
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