Yeah, you would think there would be a bunch of circular depressions probably filled with water by now.
Yup.
And they form a wide arc, which points back towards some place in Minnesota or North Illinois... Ice sheet territory...
Couldn’t these be sinkholes? We have hundreds of lakes that are formed with salt deposits simply melt away and collapse. These do not look like impact craters. Too close together in the first image and possibly impact craters in the second.
I’m no expert, just trying to use reason to find out if the timeline is correct. All of human history goes back 6 thousand years, no evidence of humans beyond that. No tombs, no artifacts, no civilizations etc. This would be a first.