Cahokia mounds is near me and a very interesting place to visit. The largest pre Columbian settlement north of Mexico.
I've actually been there. My late former in-laws lived in the southern St. Louis suburbs, and late former father in law was a boy scout troop leader and a history buff. And a chemical engineer but that is not relevant to Cahokia Mounds. Yeah, we heard lots about Cahokia Mounds.