New study challenges drought theory for Cahokia exodus

Nine hundred years ago, the Cahokia Mounds settlement just across the Mississippi River from present-day St. Louis bustled with roughly 50,000 people in the metropolitan area, making it one of the largest communities in the world. By 1400, however, the once-popular site was practically deserted, a mass departure that remains shrouded in mystery. Nine hundred years ago, the Cahokia Mounds settlement just across the Mississippi River from present-day St. Louis bustled with roughly 50,000 people in the metropolitan area, making it one of the largest communities in the world. By 1400, however, the once-popular site was practically deserted, a mass departure that remains shrouded in mystery. Archaeology Phys.org – latest science and technology news stories