We are now being told that Yellowstone was created by a super volcano.
Was the Grand Canyon created by glacier movement or super volcano?
The Colorado River, supposedly over a period of millions of years, gradually wore down the rock until it formed the Grand Canyon. It used to be a regular river, but it has been around a long, long time and supposedly had longer than say, the Tennessee River, has had to dig a huge hole in Tennessee which can be called the Grander Canyon when it gets finished.
Paul Bunyan.
Glaciers launched by super volcanos, like bowling balls down the alley.