Three Points, California

Neenach Volcano is an extinct Miocene volcano in the Coastal Ranges of California. After formation, the volcanic field was split by a fault in the San Andreas Fault Zone, and over the last 23 million years, the two halves of the volcano have moved about 195 miles (314 kilometers) apart. The correlation of the two portions, now called the Pinnacles and Neenach volcanic formations, is significant; this correlation has become a “classic example” of plate tectonics for the scientific community. Ten rock types with nearly identical field, petrographic, and chemical characteristics are present in each formation in essentially the same stratigraphic order. This provides ample evidence for the correlation and interpreted movement along the San Andreas Fault. The volcano formed 23 million years ago during tectonic subduction of the oceanic Juan de Fuca Plate beneath the continental North American Plate, a process often associated with volcanic eruptions near the plate boundaries. Subsequent complex geophysical mechanisms caused a segment of the Juan de Fuca Plate to fuse to the eastern edge of the adjoining Pacific Plate, ending subduction and initiating horizontal shear movement between the plates, with the Pacific Plate moving northwesterly and the North American Plate moving in the opposite southeast direction. This transform movement began approximately 20 million years ago and the resultant shear lineation is the San Andreas Fault Zone. The Neenach Volcano was situated directly over the primary San Andreas fault, causing it to be split in two once the transform fault movement began. The average relative motion along the fault is about 1.5 cm per year, equivalent to six inches per decade. Over the course of this movement, the two halves of the volcano drifted about 195 miles (314 kilometers) apart and eroded down into the minor rock formations visible today.

Neenach ( NEE-nak) is an agricultural settlement in northwestern Los Angeles County, California, United States, with a population of about 800. It is facing a massive change with the proposed construction of a 23,000-home planned community to its north called Centennial.

Rancho La Liebre was a 48,800-acre (197 km2) Mexican land grant in present-day Kern County, California and Los Angeles County, given in 1846 by Governor Pío Pico to José María Flores. Liebre means "Hare" in Spanish and the rancho was named as such because of the abundance of jack rabbits in the area. The rancho was mostly in the mountainous terrain of the Tehachapi Mountains and Sierra Pelona Mountains, in the northwest part of Los Angeles County, west of the Antelope Valley and Mojave Desert. The rancho is now a part of the 270,000 acres (1,093 km2) Tejon Ranch.

Arthur B. Ripley Desert Woodland State Park is a state park in the western Antelope Valley in Southern California. The park protects mature stands of Joshua trees (Yucca brevifolia) and California juniper trees (Juniperus californica) in their western Mojave Desert habitat. The park is located in northern Los Angeles County, 20 miles (32 km) west of downtown Lancaster and about 5 miles (8.0 km) from the Antelope Valley California Poppy Reserve.

The Lake Fire was a wildfire that burned during the 2020 California wildfire season in the Angeles National Forest in Los Angeles County in the state of California in the United States. The fire, which was first reported on August 12, 2020, burned 31,089 acres (12,581 ha) near Lake Hughes. It was fully contained on September 28. The cause of the fire remains unknown. The fire has damaged 3 structures, destroyed 12 structures and 21 outbuildings, and injured 4 firefighters.

Castaic Power Plant, also known as the Castaic Pumped-Storage Plant, is a seven unit pumped-storage hydroelectric plant, operated by the Los Angeles Department of Water and Power, which provides peak load power from the falling water on the West Branch of the California State Aqueduct. It is a cooperative venture between the LADWP and the Department of Water Resources of the State of California. An agreement between the two organizations was signed on September 2, 1966, for construction of the project.

Hughes Lake is a sag pond on the San Andreas Fault in the northern Sierra Pelona Mountains, in Los Angeles County, California.

The Angeles Tunnel is a 7.2-mile-long (11.6 km), 30-foot-diameter (9.1 m) water tunnel located in the Sierra Pelona Mountains in Los Angeles County, California, about 50 miles (80 km) north of Los Angeles. It was constructed between 1967 and 1970 as part of the California State Water Project and serves as the final leg of the west branch of the California Aqueduct, which carries Northern California water to Southern California residents.The tunnel also supplies water to the adjacent Castaic Power Plant, a pumped-storage hydroelectricity generation facility. To facilitate power generation, the tunnel's flow is bidirectional. During on-peak energy-demand hours, water flows downhill through the tunnel, starting at an elevation of 2,572 feet (784 m) in Pyramid Lake, and then falling over 1,000 feet (300 m) to the turbines of the Castaic Power Plant at 1,519 feet (463 m). The water is then stored in the Elderberry Forebay, adjacent to Castaic Lake. During off-peak hours, water is pumped uphill through the tunnel in the opposite direction from Elderberry Forebay and returned to Pyramid Lake. This operation reduces the energy cost of moving water along the California Aqueduct.

Lake Hughes is an unincorporated community in northern Los Angeles County, California. It is in the Sierra Pelona Mountains, northwest of Palmdale and north of the Santa Clarita Valley, in the Angeles National Forest. It is on the sag pond waters of Lake Hughes and Elizabeth Lake. The community is rural in character, with a population of 649 in 2010, but also has a strong recreational element centered on the three lakes in the vicinity. The community of Elizabeth Lake is located just east of Lake Hughes, sharing the same ZIP code.

Elderberry Forebay is a small reservoir in Los Angeles County, California, which serves as the pumping forebay of the Castaic Power Plant. It located at the upper end of the larger Castaic Lake and is separated from the lake by Elderberry Forebay Dam at its southern edge. Entering the northern end of the forebay is the west branch of the California Aqueduct, which connects the forebay to Pyramid Lake through the Angeles Tunnel.A component of the California State Water Project, the reservoir was partitioned from Castaic Lake in 1974 to store water for pumped-storage hydroelectricity generation. During on-peak energy-demand hours, water flows 7.5 miles (12.1 km) from Pyramid Lake through the Angeles Tunnel and then on to the turbines of the Castaic Power Plant, producing electricity. From there, the water flows into Elderberry Forebay. During off-peak hours (including nighttime and Sundays), water is pumped from the forebay, back through the tunnel and into Pyramid Lake.

Elderberry Forebay Dam is a dam located in the Sierra Pelona Mountains of northwestern Los Angeles County, California. The dam partitions Elderberry Forebay from Castaic Lake. It forms the headwater reservoir for Castaic Power Plant, a pumped-storage hydroelectricity generation facility. The dam was completed in 1974 as part of the California State Water Project.

Munz Lakes is a small lake located directly on the San Andreas Fault in the northern Sierra Pelona Mountains, within Los Angeles County, California.