Cahokia Mounds State Historic Site

Cahokia Mounds State Historic Site is in Illinois just across the river from Saint Louis, Missouri. It is the site of a pre-Columbian Native American city dating back to over 1000 years CE and is the largest settlement of Mississippian culture.
There are around 120 earthworks, including Monks Mound, which is the largest earthwork in the Americas.
At its height, 15,000-20,000 people inhabited the site. It was an important trade hub and gathering site.
This site was amazing. I visited there at the height of the cicada emergence and you can hear them plainly in the video.

[@stevedawson6482]

Nice shirt!! 😂

[@chrislist7456]

Thanks. I got it for taking part in an awesome hike in Wisconsin a couple of years ago. :D