Located north of Industry, in Beaver County, in the U.S. state of Pennsylvania, a one-mile section of Kelly Road is the locale of many ghost stories and local legends. It's one of the Top Haunted Roads in the world.
It is also known as the “Mystery Mile” for a reason or two. It is believed that this small portion of the road has a “bad aura” causing people to lose their temper and become vicious and violent for no apparent reason. Reports in the area mentioned sudden behavior changes in animals, movements in the shadows, and strange sounds that seem to have no origin. And, if you’re not spooked enough, the road curves through thick and dark forest patches, so be aware.
The road is 1.6 miles long running north-south from Engle Road to Wolf Run Road. It’s totally paved. Although there is no urban legend mentioning exactly what causes the bad aura, some believe that Native Americans cursed the road when the land was taken away from them. Nowadays, there are rumors of rituals and cult activity occurring in the forests near Kelly Road, so we don’t recommend going there after sundown. The popular theory is the supernatural occurrences is possibly linked to a curse placed on Mystery Mile by Native Americans, angry from the "White Man" taking their homes. Whatever the cause, after reaching the one-mile marker, the disturbances cease. Rumors of cult activity within the forest have only increased the legends surrounding this road.