San Gorgonio Pass, el. 1,591 ft (485 m), is a gap on the rim of the Great Basin between the San Bernardino Mountains to the north and the San Jacinto Mountains to the south, carrying Interstate 10 and the Union Pacific Railroad between the Los Angeles basin and the Coachella Valley. Like Cajon Pass to the northwest, it was created by the San Andreas Fault, with the valleys leading up to the pass aligned with the fault. The pass is not as steep as Cajon or Tejon passes, but it is one of the deepest mountain passes in the 48 contiguous states, with the mountains to either side rising almost 9,000 ft (2,700 m) above it. San Gorgonio Mountain, taller but farther away and less visible, is at the northern end of the pass, and Mount San Jacinto is at the southern end.