Similar to the way (or exactly the same) the Grand canyon was formed.
And the Pacific NW ‘scab lands”. Snake River Canyon.
So, so many more.
Also, people need to look at the Missouri/Mississippi system, and why it now flows south instead of east.
Conspiracy theory: The Leftists/Greens/AGWers want us to act drastically “to reverse global warming” in hopes that it will trigger another ice age, giving them a twofer: reduced world population; and, the re-formation of the Bearing Land Bridge, giving the Commies a fast track to march armies into the U.S.!