Trail includes bridge that echoes Folsom State Prison's east gate guard towers
The home has been restored by the late singer's children in a bid to help revive the town in Arkansas
Papers have been filed to turn the 'House of Cash' into a medical facility
The material includes tracks produced by Rick Rubin
Courtney Cash was found in a box in a house 70 miles east of Nashville
John Hillcoat directed the promo in homage to the late singer
John Carter Cash says his father left 'a great treasure'
LP set for March 2014 release
'Out Among The Stars' will finally be available next year (2014)