The Tejon Pass, more popularly known as The Grapevine, is a forty-mile mountain pass, linking Southern California to the Central Valley then to Northern California. It is traversed by Interstate 5.
The ancient native trail was found and explored in 1772 by Spanish explorer Pedro Fages. The pass was used in 1776 by missionary explorer, Padre Francisco Garcés. In 1806, Lt. Francisco Ruiz named it Tejon Pass while on an expedition into the San Joaquin Valley.
Elevation: 4,160′
Road: US Interstate 5
Range: Tehachapi and San Emigdio Mountains
Location: Los Angeles and Kern counties, California
Reference:
https://en.wikipedia.org/wiki/Tejon_Pass