A BNSF stack train races around the curve leading to Summit in Cajon Pass while in the background a Union Pacific stack train races up the Palmdale Cutoff. Of course racing is a relative term.
From left to right are Main 3 the South track, the steeper westbound downhill track. Main 2 the newer, easier westbound track. Main 1 the predominate uphill eastbound track. The Union Pacific to B... (more)