I did not realize that the glaciers made it that far south in Illinois. Only the tip of Illinois escaped . There were several periods of Glaciation and they have different end points. That was one of the earlier and larger ones, the Laurentide ice sheet. We live along the same margin. It ended in NE Kansas about right where I am at the KS/MO border.
_lg.png)
The last ice sheet that ploughed down out of Canada was the Wisconsin Ice Sheet. It did not cover as much area as the Laurentian ice sheet
YouTube video Wisconsin Ice-Margin Positions (Laurentide Ice Sheet) UPDATED (Set of 43 maps showing the position of ice in Wisconsin, beginning at 31,500 years ago and ending at 11,000 years ago. Developed by David Mickelson and John Attig (Wisconsin Geological and Natural History Survey, University of Wisconsin–Extension).
***Note...Sponsor of this thread, "Diana in the Driftless", is in one of those non glaciated zones in SW Wisconsin! (A beautiful area!)


Driftless Wisconsin: Your Outdoor Recreation Playground
(Ok...WI travelogue over!)
Here is our own 'un-glaciated' hillside this past fall. There IS pasture land in there - somewhere, LOL!

Every inch of our property, unless we've excavated and leveled it, is either UP or DOWN. Everyone around here has one leg slightly shorter than the other from 'walking hillside' all the time, LOL!