Two questions for the brain trust:
Does anyone out there have any good leads on the theories on Kennebec Man and the concept of pre-1000 AD European(ish) people migrating to North America? Yes, I’m fully aware that it’s a wide matter of controversy. Mormon theories not included.
Similarly, is there anyone out there who can give me a lead on the stability of Karst formations in, say, the lower midwest US? (We’ll say Illinois, Indiana or Ohio south of I-70 / US 40.)