This is a screen grab from a history channel I follow. It was talking about the migration of worms after the Ice Age… Gripping content, I know. Funny thing is it was actually pretty interesting. Her channel has all kinds of much more interesting history of the development of the Midwest, especially Michigan
Regardless, this graph showed how far south the glaciers came during the Ice Age. I started looking around our area and found it interesting that the line seemed to follow what we now have as all the major interstate systems. I can see 70, 75, 71, and the Ohio turnpike roughly outlined in the Ohio and Indiana area. I wonder what the root cause and effect is there? A ridge line? Weather pattern? What made the traveled paths match up to the ancient glacial boundaries?
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