Shots of the impressive long-distance heavy freight railway traffic in the US state of California east of Los Angeles at Cajon Pass. The parallel route of UP and BNSF connect the greater Los Angeles area with the important east-west axes of the railway companies Union Pacific (UP) and Burlington Northern Santa Fe (BNSF).

Endlessly long freight trains are moved with the diesel locomotives in multiple traction, sometimes with pusher locomotives, also in the middle of the train and at the end over the steep ramp to the top of the pass. Cajon Summit is located at 1150m (3700ft). East of this, the route continues into the Mojave Desert to Victorville and Barstow.

Recordings from March 2023