From the article:
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"A few years ago, Donald Blakeslee, an anthropologist and archaeology professor at Wichita State University, began piecing things together. And what he’s found has spurred a rethinking of traditional views on the early settlement of the Midwest, while potentially filling a major gap in American history.
Using freshly translated documents written by the Spanish conquistadors more than 400 years ago and an array of high-tech equipment, Blakeslee located what he believes to be the lost city of Etzanoa, home to perhaps 20,000 people between 1450 and 1700."
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It must be rewarding to find the site after much research.