San Geronimo, California

San Geronimo Valley is located in Marin County, California, composed of four unincorporated towns: Woodacre, San Geronimo, Forest Knolls, and Lagunitas. It is a fairly close-knit community, with a rather liberal citizenry. The farther west one goes along the valley, the more forested the land becomes. The valley is bisected roughly east-to-west by Sir Francis Drake Boulevard; a number of streets in the towns along this road were constructed on the former right-of-way of the Northwestern Pacific Railroad. The valley has numerous hiking/biking trails. Most of the residents reside on the south, shadier, side of the valley. The San Geronimo Valley derives its name from the San Geronimo Ranch, established by Adolph Mailliard and Ann Eliza Ward in 1868, where they bred thoroughbred horses, including the famous stallion Monday, who sired most of the race horses in California. The Valley is part of the Lagunitas School District, unique in that it operates two alternative elementary programs and a traditional middle school program on two connected campuses with one superintendent, one principal, and one school board. Each elementary program (Open Classroom, Montessori-inspired) has its own unique philosophy and pedagogical methods, all working within the framework of the California professional and academic standards. Each program involves parent participation to some degree. The main businesses in the Valley are the Papermill Saloon in Forest Knolls, Arti Cafe, The Pump Espresso, Woodacre Market and Deli, and the Lagunitas Grocery, though there are numerous others. Woodacre is home to Spirit Rock Meditation Center, dedicated to the teachings of Buddha and Vipasannā mediation; Dickson Ranch, and the Marin County Fire Department headquarters. San Geronimo Valley also comprises the greater part of the Lagunitas Watershed, in which some of the last remaining coho salmon spawn. The San Geronimo Valley Community Center, attached to the school district, is a hub for community events and hosts the local food bank.

Woodacre is an unincorporated town and census-designated place (CDP) in Marin County, California, United States. The population was 1,410 at the 2020 census.

Spirit Rock Meditation Center, commonly called Spirit Rock, is a meditation center in Woodacre, California. It focuses on the teachings of the Buddha as presented in the vipassana, or Insight Meditation, tradition. It was founded in 1985 as Insight Meditation West, and is visited by an estimated 40,000 people a year. The San Francisco Chronicle has called it one of "the Bay Area's best-known centers for Buddhist meditation."

Forest Knolls is an unincorporated community in Marin County, California. It is located 9 miles (14 km) southwest of Novato, at an elevation of 249 feet (76 m). For census purposes, Forest Knolls is aggregated with Lagunitas into the census-designated place Lagunitas-Forest Knolls. The first post office at Forest Knolls opened in 1916. Forest Knolls' ZIP Code is 94933.There are a number of small historical businesses in Forest Knolls such as the Papermill Creek Saloon.

Lagunitas-Forest Knolls is a census-designated place, composed of two unincorporated areas in the western half of the San Geronimo Valley in Marin County, California. It is located to the west of San Geronimo and Woodacre. The population was 1,924 at the 2020 census.The two towns are locally seen as separate. Geographically divided by narrow points in the San Geronimo Valley, each has its own small commercial center. Both towns are primarily residential. The ZIP code of Lagunitas is 94938, while the ZIP code of Forest Knolls is 94933.

Lagunitas (Laguna, Spanish for "Little lagoons") is an unincorporated community in Marin County, California. It is located 10 miles (16 km) southwest of Novato, at an elevation of 217 feet (66 m). Lagunitas is aggregated with Forest Knolls by the U.S. Census into the census-designated place (CDP) Lagunitas-Forest Knolls. The first post office at Lagunitas opened in 1906. Lagunitas' ZIP Code is 94938.

Kent Lake is a reservoir in western Marin County, California formed by the construction of Peters Dam across Lagunitas Creek. Built in 1954 (1954), the lake is the most recent lake of the Marin Municipal Water District, as well as the largest. It lies to the west of Alpine Lake; among the five major lakes in the area it is the only one to the west of Fairfax-Bolinas Road.

The Bothin Convalescent Hospital was established in 1910 as a place for women and children to convalesce after illness or surgery. The hospital was built by Henry Bothin on a thousand-acre parcel of land he had purchased in 1903 along the Northwestern Pacific Railroad near Fairfax, California. Later, a tuberculosis sanitarium was constructed on the same property. A railroad station named Bothin served the hospitals. When Bothin died in 1923, he left behind a charitable foundation to support these facilities and other non-profit organizations. The convalescent home closed in 1940 and the tuberculosis hospital operated until the 1950s.In 1948 the Marin Girl Scouts Council began using part of the property for summer activities. Scouting activity grew each year until 1959 when the entire property was leased to the Girl Scouts. Known as Camp Bothin, the site is officially named the Henry E. Bothin Youth Camp. There have been numerous claims of ghost citings at the camp, mostly relating to its prior use as a tuberculosis sanitarium

The Inkwells (also known as The Ink Wells) are two deep natural swimming pools in Lagunitas Creek, in Marin County, California. The upper Inkwell is also known as "Shafters", named after the former railroad bridge that bore its name nearby, whereas the lower Inkwell is simply known as "Inkwell" or "Hole" because it is deeper and darker. Together, they are known as "The Inkwells". They are a common swimming spot in summer, despite failing to meet current water quality standards due to high levels of coliform. The Inkwells are accessible by car as well as public transit, with a Marin Transit bus stop being less than a mile away. The Inkwells Bridge, which runs above the inkwells, is part of the Bay Area Ridge Trail. It also carries pipes that bring water from nearby Kent Lake and the nearby Nicasio Reservoir to be treated.

San Geronimo Creek is a stream in Marin County, California, United States, which feeds into Lagunitas Creek below Kent Lake.

Skywalker Ranch is a movie ranch and the workplace of film director, writer and producer George Lucas located in a secluded area near Nicasio, California, in Marin County. The ranch is located on Lucas Valley Road, named after an early-20th-century landowner in the area of no relation to George Lucas. The ranch is not open to the public.

Cascade Creek is a stream that flows south then southeast from its source on White Hill to its confluence with San Anselmo Creek just west of Fairfax in Marin County, California.