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The Monterey Formation is an extensive Miocene oil-rich geological sedimentary formation in California, with outcrops of the formation in parts of the California Coast Ranges, Peninsular Ranges, and on some of California's off-shore islands. The type locality is near the city of Monterey, California. The Monterey Formation is the major source-rock for 37 to 38 billion barrels of oil in conventional traps such as sandstones. This is most of California's known oil resources. The Monterey has been extensively investigated and mapped for petroleum potential, and is of major importance for understanding the complex geological history of California. Its rocks are mostly highly siliceous strata that vary greatly in composition, stratigraphy, and tectono-stratigraphic history. The US Energy Information Administration (EIA) estimated in 2014 that the 1,750 square mile Monterey Formation could, as an unconventional resource, yield about 600 million barrels of oil, from tight oil contained in the formation, down sharply from their 2011 estimate of a potential 15.4 billion barrels. An independent review by the California Council on Science and Technology found both of these estimates to be "highly uncertain." Despite intense industry efforts, there has been little success to date (2013) in producing Monterey-hosted tight oil/shale oil, except in places where it is already naturally fractured, and it may be many years, if ever, before the Monterey becomes a significant producer of shale oil. The Monterey Formation strata vary. Its lower Miocene members show indications of weak coastal upwelling, with fossil assemblages and calcareous-siliceous rocks formed from diatoms and coccolithophorids. Its middle and upper Miocene upwelling-rich assemblages, and its unique highly siliceous rocks from diatom-rich plankton, became diatomites, porcelainites, and banded cherts.

Laguna Hills (; Laguna, Spanish for "Lagoon") is a city in Orange County, California, United States. Its name refers to its proximity to Laguna Canyon and the much older Laguna Beach. Other newer cities nearby—Laguna Niguel and Laguna Woods—are similarly named.

Laguna Hills Technology Branch Library is one of two "technology branches" within the 33-branch Orange County Public Libraries (OCPL) system.

Laguna Hills Mall was a shopping mall in Laguna Hills, California, in southern Orange County that is being redeveloped by the owners as Five Lagunas. The enclosed mall closed on December 31, 2018 and will be demolished. The exterior stores remain open. New retail, a movie theater, apartments, and a parking structure are currently planned to replace the old mall structure.

Laguna Woods Village is an age-restricted community for persons aged 55 and over in Laguna Woods, California. The development, formerly known as Leisure World, was developed by Ross Cortese, a former fruit stand owner turned retirement community developer.

Silverado High School is a continuation high school in Mission Viejo, California, United States. It is part of the Saddleback Valley Unified School District.

Mission Viejo High School is a four-year comprehensive public high school located in Mission Viejo, California, United States, as part of the Saddleback Valley Unified School District. The school has served the area since 1966. Students within its attendance boundaries live in western Mission Viejo, southwest Lake Forest, Trabuco Canyon, Rancho Santa Margarita, and Laguna Hills. Its mascot is Pablo the Diablo and its colors are scarlet and gold. 230 credits are required to graduate. It is the home to one of the only agricultural farms on a high school campus in the Saddleback Valley Unified School District. In the 2014–2015 school year, the school had an enrollment of 2,438 students and 92.7 classroom teachers (on an FTE basis), for a student–teacher ratio of 26.3:1. There were 333 students (13.7% of enrollment) eligible for free lunch and 100 (4.1% of students) eligible for reduced-cost lunch.

Saddleback Valley refers to the flat and foothill areas west-southwest of the Saddleback mountain peak of the Santa Ana Mountains and east-northeast of the hilly Crystal Cove State Park in South Orange County, California. The region primarily encompasses the cities of Mission Viejo, Lake Forest, and Rancho Santa Margarita, as well as the communities of Coto de Caza and Ladera Ranch. The cities of Aliso Viejo, Laguna Woods, Laguna Hills, and Laguna Niguel, as well as some of Orange County's eastern canyon communities, partially reside within the valley. The southeastern portion of Irvine also encroaches upon the area, but the two are not typically associated with each other. The cityscape within Saddleback Valley is suburban, a remote reach of the Los Angeles Metropolitan Area. The area is recently developed and on the outskirts of the Southern California megalopolis, so wildlife sightings are more common. Snakes, coyotes, and mountain lions have long inhabited the area. Mountain lion attacks on people have happened in the outlying wilderness parks of Saddleback Valley, but they are very rare.

The Actors Workshop is one of southern California's oldest film acting programs and is generally associated with the Sanford Meisner and Charles Conrad techniques. The company was established by its parent company, Shannon & Company.

Laguna Woods (Laguna, Spanish for "Lagoon") is a city in Orange County, California, United States. The population was 16,192 at the 2010 census, down from 16,507 at the 2000 census with a median age of 78. About ninety percent of the city consists of Laguna Woods Village, a private gated retirement community, formerly known as Leisure World. The other ten percent consists of businesses and the city hall, which are available to the public. Incorporation efforts in the late 1990s were largely driven by the need for residents to have a stronger voice against the prospective construction of an international airport at the nearby decommissioned Marine Corps Air Station El Toro. The airport proposal was defeated and the land in question has been tabbed for development as the Orange County Great Park.

The Laguna Woods shooting was a mass shooting that occurred on May 15, 2022, at the Geneva Presbyterian Church in Laguna Woods, California, United States. The church in Orange County was hosting a congregation of the Irvine Taiwanese Presbyterian Church for Sunday services. The shooter killed one person and wounded five others. A suspect, 68-year-old David Chou of Las Vegas, was arrested at the scene. Authorities allege that the crime was committed out of a political hatred of Taiwan and the Taiwanese people. Chou has been charged with one count of murder and five counts of attempted murder, all with hate crime enhancements, and four counts of possessing an explosive device.

Aliso Viejo (Spanish for "Old Sycamore") is a city in the San Joaquin Hills of southern Orange County, California. It had a population of 52,176 as of the 2020 census, up from 47,823 as of the 2010 census. It became Orange County's 34th city on July 1, 2001, the only city in Orange County to be incorporated since 2000. It is bordered by the cities of Laguna Beach on the west and southwest, Laguna Hills on the east, Laguna Niguel on the southeast, and Laguna Woods on the north. It is similarly named to another nearby city, Mission Viejo.