Once upon a time all this was Glacier .... 
But then that dead white guy Henry Hudson (et al) came along and wrecked it all .......
/sarcasm
Gee Iwonder if they investigated the fact that glaciers go through cycles of Melt down and Freeze up. They might have some history on it, would they say?
Ops4 God Bless America!
But then that dead white guy Henry Hudson (et al) came along and wrecked it all ....... /sarcasm