Archeology

I am standing atop a 100-foot-high temple mound, the largest known earthwork in the Americas built by prehistoric peoples. The temperatures, in the high 80s, along with the oppressive humidity, have emptied the park of all but a handful of visitors. My shirt is matted with sweat. I look out from the structure—known as Monks Mound — at the flatlands below, with smaller mounds dotting the distance. These earthen mounds, built at a confluence of the Illinois, Mississippi and Missouri rivers, are all that remain of one of the largest pre-Columbian settlements north of Mexico, occupied from around 800 to 1,400 AD by perhaps as many as 20,000 people.