Cajon Pass, San Bernardino, California (Google Maps ⧉, OpenStreetMap ⧉)

"He listened to the constant sirens, and the long whine and downshift of semitrucks heading down the Cajon Pass into San Bernardino."

"Besieging the rich at Palm Springs, hiking or driving with great anguish up and over the Cajon Pass, with apparently not the slightest knowledge that what they would find on the other side of the mountains was miles of desert waste..."

"… along the 215 freeway, where it then headed up the Cajon Pass and went through the San Bernardino Mountains to Barstow, and on to Las Vegas."