7 units lead a southbound HMODBAR at the Tehachapi crossovers.

BNSF 7997 (ES44C4) shoves a stack train through the S curves near the Tehachapi Loop.

Here we see a wide-angle view of the Tehachapi Loop as a Union Pacific SD70AH leads a freight through the 360-degree curve which helps train drop down in grade.

Snow covers the tops of the high peaks that surround Tehachapi Pass. Almost to the Summit at Tehachapi, BNSF ES44C4 no. 8068 climbs through Cable.

A Brooklyn to LA Z train wraps around itself on Tehachapi Loop.

Exiting Tunnel 10 after rounding the Tehachapi Loop a southbound grainer climbs up through Marcel.

Climbing through Cable southbound BNSF C449W no. 5526 has almost made the Summit in Tehachapi.

Southbound BNSF C449W no. 5526 Holds at Tehachapi with it's Auto Racks hanging on the grade for a runby with a northbound grainer.

A southbound BNSF QSTOALT passes under the hi-wide detector near Monolith.

It takes a lot of power to lift heavy trains over the Tehachapi Mountains, as evidenced by the nine locomotives needed to get this Santa Fe eastbound, led by F45 5903. Nine diesels from EMD’s f... (more)

A couple Tier 4 GEVOs assist a Stockton to Barstow manifest upgrade as they near Marcel.

After meeting Z-WSPNBY, the DPUs on H-STOBAR proceed towards Marcel.

The rear of H-STOBAR loops around itself at Tehachapi.

DPUs on an H-STOBAR approach Tehachapi Loop.

The head end on a Stockton to Barstow manifest crosses over itself as they work upgrade towards the summit at Tehachapi.