Cascade Summit to Klamath Falls. Traveling along the historic Southern Pacific line now operated by Union Pacific, this journey through Oregon's scenic Cascade mountain range takes you from Cascade Summit to Klamath Falls. You'll view a Pike M-2 clearing snow from the right-of-way near Kirk, BNSF traffic mixed with the UP via trackage rights to Klamath Falls, former Southern Pacific tunnel motors, UP's Heritage unit #1996 on her maiden voyage, rare footage of the Swift Road Railer train at Calimus, and more. 1 hr. 51 min. #0RV2247