Santiago Peak and Modjeska Peak Saddleback photo D Ramey Logan

Saddleback, sometimes called Old Saddleback or Saddleback Mountain, is a natural

landmark A landmark is a recognizable natural or artificial feature used for navigation, a feature that stands out from its near environment and is often visible from long distances. In modern use, the term can also be applied to smaller structures or f ...

formed by the two highest peaks of the

Santa Ana Mountains The Santa Ana Mountains are a short peninsular mountain range along the coast of Southern California in the United States. They extend for approximately southeast of the Los Angeles Basin largely along the border between Orange and Riverside co ...

and the gap between them. Resembling a

saddle The saddle is a supportive structure for a rider of an animal, fastened to an animal's back by a girth. The most common type is equestrian. However, specialized saddles have been created for oxen, camels and other animals. It is not kno ...

as viewed from most of

Orange County, California Orange County is located in the Los Angeles metropolitan area in Southern California. As of the 2020 census, the population was 3,186,989, making it the third-most-populous county in California, the sixth-most-populous in the United States, a ...

, this

landform A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, ...

dominates the county's eastern

skyline A skyline is the outline or shape viewed near the horizon. It can be created by a city’s overall structure, or by human intervention in a rural setting, or in nature that is formed where the sky meets buildings or the land. City skylines ...

. On the clearest days, Saddleback is visible from most of the

Greater Los Angeles Greater Los Angeles is the second-largest metropolitan region in the United States with a population of 18.5 million in 2021, encompassing five counties in Southern California extending from Ventura County in the west to San Bernardino Coun ...

area.

Santiago Peak Santiago Peak is the southern mountain of the Saddleback landform in Orange County, California. It is the highest and most prominent peak of both the Santa Ana Mountains and Orange County; it also marks a border point with Riverside County. Th ...

is the highest peak in the range and the highest point in the county at .

Modjeska Peak Modjeska Peak is the northern mountain of the Saddleback landform in Orange County California. It is the second-highest peak of the Santa Ana Mountains, after Santiago Peak, whose summit is less than to the northwest. Modjeska lies within Clevel ...

is the second highest at . The two peaks form part of the border between Orange and

Riverside Riverside may refer to: Places Australia * Riverside, Tasmania, a suburb of Launceston, Tasmania Canada * Riverside (electoral district), in the Yukon * Riverside, Calgary, a neighbourhood in Alberta * Riverside, Manitoba, a former rural m ...

counties. The hilly

landscape A landscape is the visible features of an area of land, its landforms, and how they integrate with natural or man-made features, often considered in terms of their aesthetic appeal.''New Oxford American Dictionary''. A landscape includes the ...

in south Orange County is known colloquially as

Saddleback Valley Saddleback Valley refers to the flat and foothill areas west-southwest of the Saddleback (Orange County, California), Saddleback double summit, double peak of the Santa Ana Mountains and east-northeast of the hilly Crystal Cove State Park in sou ...

, and hence many institutions are named after Saddleback, including

Saddleback Church Saddleback Church is a Baptist Evangelical multi-site megachurch, affiliated with the Southern Baptist Convention, located in Lake Forest, California. It is the largest church in California, and one of the largest in the United States of America. ...

Saddleback College Saddleback College (Saddleback) is a public community college in Mission Viejo, California. It is part of the California Community College system and awards over 300 associate degrees, academic certificates, and occupational skills awards in 19 ...

, and the

Saddleback Valley Unified School District Saddleback Valley Unified School District (SVUSD) is a public school district in South Orange County, California. It includes 23 elementary schools, four intermediate schools, four comprehensive high schools, and four alternative schools. It ser ...

. The presence of

volcanic rock Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Like all rock types, the concept of volcanic r ...

s in

Silverado Canyon Silverado Canyon is a roughly 2,500-foot-deep (760 m) gorge in the Santa Ana Mountains, in the U.S. state of California. The small stream it is associated with, Silverado Creek, rises on the north slope of Modjeska Peak at the elevation of and f ...

indicates that Saddleback Mountain was formed prior to the development of the

San Andreas Fault The San Andreas Fault is a continental transform fault that extends roughly through California. It forms the tectonics, tectonic boundary between the Pacific Plate and the North American Plate, and its motion is Fault (geology)#Strike-slip fau ...

, back when a

subduction Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the ...

zone occurred where the

Pacific Plate The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At , it is the largest tectonic plate. The plate first came into existence 190 million years ago, at the triple junction between the Farallon, Phoenix, and Iza ...

went under California.

References

{{commonscat Landforms of Orange County, California Santa Ana Mountains