Perhaps most interesting, a rock containing what is believed to be an ancient map has emerged in the Mississippi River in southeast Missouri.
The rock contains etchings believed to be up to 1,200 years old. It was not in the river a millennium ago, but the changing course of the waterway now normally puts it under water — exposed only in periods of extreme drought. Experts are wary of giving a specific location out of fear that looters will take a chunk of the rock or scribble graffiti on it.
“It appears to be a map of prehistoric Indian villages,” said Steve Dasovich, an anthropology professor at Lindenwood University in St. Charles. “What’s really fascinating is that it shows village sites we don’t yet know about.”
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