A westbound Union Pacific freight, behind SD70ACe 8344 (and SD70ACe 8393, AC4400CW 5500 and SD70M 4954), enters San Bernardino after crossing Cajon Pass. The Pass is the depression between the San Gabriel and San Bernardino Mountains, visible just above the highway bridge (the I-15 Freeway, which parallels the railroad, is just barely visible on the hillside).