Yes, I have been there, and yes, I have seen what you mentioned. impressive.
Last glacier, so called Wisconsin glacier reached as far south as south of Indianapolis. Ohio valley was created by flood from melting glaciers.
What is even more stunning is the fact that the glaciers melted in practically no time. Like maybe few years?
The melting of glaciers was accompanied by huge floods, a lot larger that anything we ever experienced.
All the Midwest river valleys were carved by that flood, instanty.
For years when driving down to NYC I'd pass a sign on I-91 south of Hartford that says "Dinosaur State Park". I had always wanted to stop but never did...until last summer. It's main attraction is a small bit of mud,now enclosed in a small building,in which one can see what looks like many bird-like tracks. They say that those tracks were left by a creature that looked something like one of the main creatures in Jurassic Park (the one that spat that black stuff at the fat guy)...about 200 million years ago.
Yikes!
Isn’t it time to show people The Boo, by Firestone, et al?