Santa Susana Mountains
Overview
 
The Santa Susana Mountains are a transverse
Transverse Ranges
The Transverse Ranges are a group of mountain ranges of southern California, in the Pacific Coast Ranges physiographic region that runs along the Pacific coast from Alaska to Mexico in North America. The Transverse Ranges begin at the southern end of the California Coast Ranges and lie between...

 range of mountains in southern
Southern California
Southern California is a megaregion, or megapolitan area, in the southern area of the U.S. state of California. Large urban areas include Greater Los Angeles and Greater San Diego. The urban area stretches along the coast from Ventura through the Southland and Inland Empire to San Diego...

 California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, north of the city of Los Angeles
Los Ángeles
Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

, in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. The range runs east-west separating the San Fernando Valley
San Fernando Valley
The San Fernando Valley is an urbanized valley located in the Los Angeles metropolitan area of southern California, United States, defined by the dramatic mountains of the Transverse Ranges circling it...

 and Simi Valley
Simi Valley
Simi Valley is a synclinal valley in Southern California in the United States. It is an enclosed or hidden valley surrounded by mountains and hills. It is connected to the San Fernando Valley to the east by the Santa Susana Pass & 118 freeway, and in the west the narrows of the Arroyo Simi and 118...

 on its south, from Santa Clara River Valley
Santa Clara River Valley
The Santa Clara River Valley is a valley that runs from east to west through Ventura County and northwest Los Angeles County, California...

 to the north, and Santa Clarita Valley
Santa Clarita Valley
The Santa Clarita Valley is the valley of the Santa Clara River in Southern California. It stretches through Los Angeles County and Ventura County. Its main population center is the city of Santa Clarita. The valley was part of the Rancho San Francisco Mexican land grant...

 to the northeast. The Oxnard Plain
Oxnard Plain
The Oxnard Plain is a large coastal plain in southwest Ventura County, California bounded by the Santa Monica Mountains, the Santa Susana Mountains, and Oak Ridge to the east, the Topatopa Mountains to the north, the Santa Clara River Valley to the northeast and the Pacific Ocean to the south and...

 is to the west of Santa Susana Mountains.
The Newhall Pass separates the Santa Susana Mountains from the San Gabriel Mountains
San Gabriel Mountains
The San Gabriel Mountains Range is located in northern Los Angeles County and western San Bernardino County, California, United States. The mountain range lies between the Los Angeles Basin and the Mojave Desert, with Interstate 5 to the west and Interstate 15 to the east...

 to the east. Newhall Pass is the major north-south connection between the San Fernando Valley and the Santa Clarita Valley, and Interstate 5 and a railroad line share Newhall Pass.
 
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