Norway also wasn't populated until after the last ice age. As an American archaeologist, old stuff is also quite common here. The fun examples I like to use are the structures in Tucson older than Rome.

Your "local archeologist" is one of the staff at the state historic preservation society [0], though you'll likely have more luck contacting a local university archeologist if you find anything.

[0] https://www.ohiohistory.org/preserving-ohio/state-historic-p...