These days, they look like strangely shaped hills, green and inviting in rural Illinois. But at its peak, Cahokia was the epicenter of ancient Mississippian culture. With a population of 20,000 in 1250 A.D., Cahokia was larger than London was at the same time.
The Missouri Drone Journalism Program visited the site while a crew of archeologists from Italy unearthed new clues that could explain just how this metropolis was organized. Aerial footage taken with remotely operated drones shows the geographical context of the site.