Cahokia Mounds is rumored to be haunted by the ancient Native Americans who once inhabited the city, with visitors reporting sightings of unexplained shadows and balls of light. These supposed paranormal occurrences are attributed to the mounds being the final resting place for many who lived there. The area is said to be haunted by the spirits of the ancient Native Americans who built and lived in Cahokia, a massive prehistoric city. Stories circulate about mysterious lights and shadowy figures appearing on the grounds, particularly at night. The mounds served as both foundations for important buildings and as burial sites for the city's elite and their retainers. The ancient mounds are the resting place of hundreds of individuals who were buried there, and some believe their spirits linger.