[aerohead]

Originally Posted by freebeard

It's hard to keep up. My prepared statement:



A silent testimonial in the Eastern Washington state Scablands. www.nps.gov/parkhistory: Geological Survey -- The Channeled Scablands of Eastern Washington


edit: A source that you disavow.

Again, I don't have the proper workbooks with me.
I do recall mentions of enormous inland seas caused by the likes of the Laurentide Ice Sheet, which would rupture, unleashing a column of water of biblical proportions, sending enormous boulders to scour the landscape, of which the effects can be seen today.