[colorado tanker]

I did some googling and confirmed that in the West the ice stopped at about the Canadian border. There was substantial glaciation in the high mountains, but I couldn't find anything as to thickness. You see a lot of evidence of glaciation in Rocky Mountain National Park.

It's speculation on my part, but I would really doubt they were three miles thick, especially where the plains and mountain valleys were ice-free.

Still, the slogan "tis a pleasure to live in Colorado" probably wouldn't have been coined during the last glacial max. :-))

[TigersEye]

Three miles of ice makes me skeptical too. That would be more ice than the mountains are high from sea level. But I did read that theory somewhere. I’m just glad to be here now speculating about it and I hope it keeps warming.