Brushy Mountain SideBars: Frozen Head and Barkley Marathons

May 9, 2018: This Back to Brushy Mountain "SideBar" shows how the prison's coal mining roots led to a scenic park and the world's toughest ultra-marathon.
Published: 9:43 PM EDT May 9, 2018
Updated: 9:43 PM EDT May 9, 2018