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Santa Monica Mountains
Malibu Canyon in the Santa Monica Mountains
Country	United States
State	California
Counties	Los Angeles, Ventura
Highest point	Sandstone Peak
- elevation	3,111 ft (948 m)

The Santa Monica Mountains are a low transverse range in southern California in the United States.

Contents 1 Geography 2 Geology 3 Climate 4 Wildlife 5 Additional information 6 Named peaks 7 See also 7.1 Nearby mountain ranges 8 External links

They run for approximately 40 mi (64 km) east-west from the Hollywood Hills in Los Angeles to Point Mugu in Ventura County. The mountains form a barrier between the San Fernando Valley and the Los Angeles Basin, separating "the Valley" on the north and west-central Los Angeles on the south. Santa Monica Mountains are parallel to Santa Susana Mountains, which is located directly north of the mountains across the San Fernando Valley.

Geologists consider the northern Channel Islands to be a westward extension of the Santa Monicas into the Pacific Ocean. The range was created by repeated episodes of uplifting and submergence by the Raymond Fault that created complex layers of sedimentary rock. Volcanic instrusions have been exposed, including the poorly named Sandstone Peak, the highest in the range at 948 meters (3,111 feet). Malibu Creek, which eroded its own channel while the mountains slowly tilted up, bisects the range.

The Santa Monica Mountains have dry, warm to humid summers and wet, mild to cool winters. In the summer, the climate is very dry, which makes the range prone to wildfires. Snow is very occasional (rare) in the Santa Monica Mountains, as they are not as steep as the nearby San Gabriel Mountains.

On 17 January 2007, an unusually cold storm brought snow in the Santa Monica Mountains. Malibu picked up 3 in (8 cm) of snow - the first measurable snow in 5 decades (50 years). Snow was also reported in Boney Peak, in the winter of 2005, and in March 2006, snow also fell on the summit of the mountain.

The Santa Monica Mountains are in the California chaparral and woodlands ecoregion and are covered by hundreds of local plant species, some of which are very rare, and others of which have become popular ornamentals. The range is host to an immense variety of wildlife, from mountain lions to the endangered steelhead.

The mountains have more than 1,000 sites of archeological significance, particularly in regard to the Tongva and Chumash people. Today, the Santa Monica Mountains face pressure from local populations, who see the range as a recreational retreat, a desirable residential area, and as an increasingly rare wild place in urban Los Angeles.

In local speak, "going over the hill" refers to crossing the range.

Cahuenga Pass, present-day site of the U.S. Route 101, is the easiest pass through the range connecting the Los Angeles Basin to the San Fernando Valley. In the 1800s, two battles were fought there, and the Treaty of Cahuenga was signed nearby. In the heyday of Hollywood movie studios clustered on both sides of it. Sepulveda Pass is the main north-south pass to the west, connecting the Westside to Sherman Oaks via the San Diego (405) freeway. Further west are Topanga Canyon Boulevard, Malibu Canyon Road, and Kanan Dume Road. Mulholland Drive runs most of the length of the Santa Monica Mountains, from Cahuenga Pass to Sequit Point. The eastern end of the range, located in the City of Los Angeles, is more intensively developed than the western end of the range. The city of Malibu runs between the coast and the leading mountain ridge, from Topanga Canyon in the east to Leo Carrillo State Beach in the west. The term Malibu Ozarks is sometimes used derogatorily (or ironically) for the unincorporated part of Malibu beyond the leading mountain ridge and lacking an ocean view; the term is often used synonymously with "818 Malibu" (referring to the less desirable San Fernando Valley telephone area code prefix).

Much of the mountains are located within the Santa Monica Mountains National Recreation Area. Preservation of lands within the region are managed in part by the Santa Monica Mountains Conservancy. Over twenty individual state and municipal parks are in the Santa Monica Mountains, including: Topanga State Park, Leo Carrillo State Park, Malibu Creek State Park, Point Mugu State Park, Will Rogers State Historic Park, Point Dume State Beach, Griffith Park, Charmlee Wilderness Park, Runyon Canyon Park, and the Paramount Ranch.

Communities along the north slope of the mountains include (from east to west):

• the Los Angeles communities of:
  • Studio City
  • Sherman Oaks
  • Encino
  • Tarzana
  • Woodland Hills
• Calabasas
• Agoura Hills
• Westlake Village
• Thousand Oaks
• Newbury Park

Communities along the south slope of the mountains include (from east to west):

• the Los Angeles communities of:
  • Los Feliz
  • Hollywood Hills
  • Beverly Hills
  • Bel-Air
  • Brentwood
• Pacific Palisades
• the unincorporated community of Topanga
• Malibu

Named Peaks in the Santa Monica Mountains

Peak	Height		Notes
	US	SI
Sandstone Peak	3111 ft	948 m	also known as Mount Allen, rising nearly a kilometer high
Tri-Peaks	3010 ft	917 m
Exchange Peak	2950 ft	899 m
Boney Peak	2825 ft	861 m
Castro Peak	2824 ft	861 m	highest peak in the eastern end of the range
Saddle Peak	2805 ft	855 m
Calabasas Peak	2165 ft	660 m
Temescal Peak	2126 ft	648 m
San Vicente Mountain	1965 ft	599 m	former site of a Nike missile base, now a Cold War park
Clarks Peak	1965 ft	599 m
Mesa Peak	1844 ft	562 m
Cahuenga Peak	1820 ft	555 m
Brents Mountain	1713 ft	522 m
Mount Lee	1640 ft	500 m	the Hollywood Sign is on the southern slope, at exactly half a kilometer high
Mount Hollywood	1625 ft	495 m
Mount Chapel	1622 ft	494 m
Mount Bell	1587 ft	484 m
La Jolla Peak	1567 ft	478 m
Laguna Peak	1457 ft	444 m
Mugu Peak	1266 ft	386 m	the westernmost peak in the range, rising directly from the beach

• Simi Hills
• Santa Susana Mountains
• Verdugo Mountains
• San Gabriel Mountains

• Santa Monica Mountains National Recreation Area
• Santa Monica Mountains Conservancy
• Wildflowers of the Santa Monica Mountains
• SMMNRA Interactive Locator Map

Coordinates: 34°02′15″N, 118°47′38″W