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.
They lived in thatched, beehive-shaped houses that ran for at least five miles along the bluffs and banks of the Walnut and Arkansas rivers. Blakeslee says the site is the second-largest ancient settlement in the country after Cahokia in Illinois.
https://www.latimes.com/nation/la-na-kansas-lost-city-20180819-htmlstory.html