The Great Smoky Mountains National Park is the most visited national park in the country, with 12.1 million recreational visits in 2020. Aside from crowds of hikers, campers, and general tourists, there's a dark side to the Smokies, the town of Gatlinburg and the surrounding foothills. From strange disappearances, grisly murders and bone-chilling paranormal hauntings and ghost sightings; this pristine paradise has a lot more to offer than just serene hiking trails or camping.