Morro Bay is a seaside city in San Luis Obispo County, California, United States. Located on the Central Coast of California, the city population was 10,757 as of the 2020 census, up from 10,234 at the 2010 census. The town overlooks Morro Bay, a natural embayment with an all-weather small craft commercial and recreational harbor.
The Mono–Inyo Craters are a volcanic chain of craters, domes and lava flows in Mono County, Eastern California. The chain stretches 25 miles (40 km) from the northwest shore of Mono Lake to the south of Mammoth Mountain. The Mono Lake Volcanic Field forms the northernmost part of the chain and consists of two volcanic islands in the lake and one cinder cone volcano on its northwest shore. Most of the Mono Craters, which make up the bulk of the northern part of the Mono–Inyo chain, are phreatic volcanoes that have since been either plugged or over-topped by rhyolite domes and lava flows. The Inyo volcanic chain form much of the southern part of the chain and consist of phreatic explosion pits, and rhyolitic lava flows and domes. The southernmost part of the chain consists of fumaroles and explosion pits on Mammoth Mountain and a set of cinder cones south of the mountain; the latter are called the Red Cones.
Lassen Volcanic National Park is a national park of the United States in northeastern California. The dominant feature of the park is Lassen Peak, the largest plug dome volcano in the world and the southernmost volcano in the Cascade Range. Lassen Volcanic National Park is one of the few areas in the world where all four types of volcanoes can be found: plug dome, shield, cinder cone, and stratovolcano.
The Lassen volcanic area presents a geological record of sedimentation and volcanic activity in and around Lassen Volcanic National Park in Northern California, U.S. The park is located in the southernmost part of the Cascade Mountain Range in the Pacific Northwest region of the United States. Pacific Oceanic tectonic plates have plunged below the North American Plate in this part of North America for hundreds of millions of years. Heat and molten rock from these subducting plates has fed scores of volcanoes in California, Oregon, Washington and British Columbia over at least the past 30 million years, including these in the Lassen volcanic areas.
The richly textured landscape of the United States is a product of the dueling forces of plate tectonics, weathering and erosion. Over the 4.5 billion-year history of the Earth, tectonic upheavals and colliding plates have raised great mountain ranges while the forces of erosion and weathering worked to tear them down. Even after many millions of years, records of Earth's great upheavals remain imprinted as textural variations and surface patterns that define distinctive landscapes or provinces.
Hollister Peak is a 1,404-foot (428 m) volcanic plug located near Morro Bay, California. It is one of the Nine Sisters, and receives its name from the family that lived at its base in 1884. It was of religious importance to the Chumash. Hollister Peak is on private property and has no public access.
Cerro San Luis Obispo is a 1,292 feet (394 m) mountain in San Luis Obispo, California. It is part of the chain of peaks called the Nine Sisters. It is a common spot for hiking, jogging and mountain biking, and has steep terrain. Below the west side of the visible peak, there is a large plateau with a large wooden stage on the east end. The large white "M" present on the east face derives from Mission College Preparatory Catholic High School.
Cerro Cabrillo, also known locally as Cabrillo Peak, is a rocky mountain in eastern Morro Bay State Park, San Luis Obispo County, central California.
Morro Bay State Park is a state park on the Morro Bay lagoon, in western San Luis Obispo County, on the Central Coast of California. On the lagoon's northeastern and eastern edges in the park, there are saltwater and brackish marshes that support thriving bird populations.
Bishop Peak is a 1,546-foot (471 m) volcanic plug in San Luis Obispo, California. It is the tallest of the Morros or "Nine Sisters", a chain of similar peaks stretching to Morro Bay. Often said to take its name from its resemblance to a bishop's miter, it is named in homage to the town's name. "Obispo" is the Spanish word for Bishop.
Morro Rock is a volcanic plug in Morro Bay, California, on the Pacific Coast at the entrance to Morro Bay harbor. A causeway connects it with the shore, making it a tied island. The rock is protected as the Morro Rock State Preserve.
Black Hill is a mountain situated in Morro Bay, California, part of Morro Bay State Park. It is one of a series of volcanic plugs called the Nine Sisters.
Cerro Romualdo is a 1,300-foot (396 m) mountain in San Luis Obispo County, California. The mountain is the fifth in a series of volcanic plugs called the Nine Sisters. Until 1964 the mountain was officially known as Romualdo Peak.
Chumash Peak is a 1,257 ft (383 m) mountain in San Luis Obispo County, California. It is just northwest of San Luis Obispo, on the south side of California State Route 1.
Islay Hill is a volcanic cone, and is the southernmost of the nine volcanic mountains and hills that make up the Nine Sisters, located in the San Luis Obispo County of central California.
The West Elk Mountains are a high mountain range in the west-central part of the U.S. state of Colorado. They lie primarily within the Gunnison National Forest, and part of the range is protected as the West Elk Wilderness. The range is primarily located in Gunnison County, with small parts in eastern Delta and Montrose counties.
The Los Osos Valley is a valley within San Luis Obispo County, in the Central Coast of California region.
Pilot Rock is a prominent volcanic plug located in the western Cascade Range near the east end of the Siskiyou Mountains, just east of the Siskiyou Summit near Ashland, Oregon. Rising thousands of feet above the Shasta and Rogue valleys, it is a landmark distinguishable from over 40 miles (64 km) away. At 25.6 million years old, it is one of the oldest formations of the Cascade Range. The rock is protected by the Cascade–Siskiyou National Monument and the Soda Mountain Wilderness. Several trails pass near Pilot Rock, including the Pacific Crest Trail.
Cabezon Peak is a large volcanic plug that is a prominent feature in northwestern New Mexico. It rises to 7,785 feet in elevation, and nearly 2,000 feet above the floor of the Rio Puerco Valley. Cabezon Peak is two miles south of the old ghost town of Cabezon and the Rio Puerco. This volcanic neck is formed of basalt and is part of the Mount Taylor volcanic field. A volcanic neck or plug is formed when magma from an existing volcano solidifies in the pipe or neck and the surrounding sediment is eroded away. Marine Cretaceous rocks of the Mancos Shale and Point Lookout Sandstone are exposed around the base of Cabezon Peak.
Round Top is a 10,381-foot (3,164 m) mountain located on the Sierra crest in Alpine County, California, United States. Its summit is the highest point in Eldorado National Forest and the Mokelumne Wilderness. The mountain lies just south of Carson Pass. With 2,541 feet (774 m) of prominence, Round Top is the 16th most prominent mountain in the Sierra Nevada.
