Sanborn County Park is a 3,453 acre (13.97 km²) county park situated in the

Santa Cruz Mountains The Santa Cruz Mountains, part of the Pacific Coast Ranges, are a mountain range in central and Northern California, United States. They form a ridge down the San Francisco Peninsula, south of San Francisco. They separate the Pacific Ocean from ...

, managed by the

Santa Clara County Parks and Recreation Department Santa Clara County Parks and Recreation Department, sometimes referred to as Santa Clara County Parks Department or Santa Clara County Parks, is a government department in Santa Clara County, California. The department manages 29 parks with a total ...

. The deeply forested park features over 15 miles of trails, second-growth

redwood Sequoioideae, popularly known as redwoods, is a subfamily of coniferous trees within the family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affini ...

s, and creeks that flow year-round. It offers hiking, RV camping, walk-in campsites, and picnicking/

BBQ Barbecue or barbeque (informally BBQ in the UK, US, and Canada, barbie in Australia and braai in South Africa) is a term used with significant regional and national variations to describe various cooking methods that use live fire and smoke t ...

sites. In the summer months, Sanborn County Park hosts the only outdoor

Shakespeare William Shakespeare ( 26 April 1564 – 23 April 1616) was an English playwright, poet and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's nation ...

an company in

Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...

. The park is located four miles west of the town of Saratoga and straddles the steep slopes of the Santa Cruz Mountains from Sanborn Road all the way up to

Skyline Boulevard 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 ...

. Adjacent properties include the Walden West Environmental Education Center, Castle Rock State Park, the Los Altos Rod and Gun Club Range and the Santa Clara County Peace Officers Association gun range.

Practical information

The park is open year-round, although there is no entry after sunset. Sanborn County Park is located on Sanborn Road. From the city of Saratoga, proceed two miles (3 km) west on Highway 9 to Sanborn Road, thence turning left onto Sanborn Road, traveling one mile (1.6 km) to the park entrance. Overnight camping is permitted and RV use is allowed for a limited number of

vehicle A vehicle (from la, vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses, mobility scooters for disabled people), railed vehicles (trains, trams), wa ...

s at designated locations. Pets must be leashed and are permitted in

picnic A picnic is a meal taken outdoors ( ''al fresco'') as part of an excursion, especially in scenic surroundings, such as a park, lakeside, or other place affording an interesting view, or else in conjunction with a public event such as preceding ...

and RV areas, and most trails. There are entry fees collected at all times. There are strictly enforced rules prohibiting the picking of vegetation or damaging of trees. All facilities are not handicapped accessible, although there is an all-access trail emanating from the visitor center. Picnic tables and some grassy lawn areas are available in a very small portion of the park.

History

The site was long-visited by native Americans including the

Ohlone The Ohlone, formerly known as Costanoans (from Spanish meaning 'coast dweller'), are a Native American people of the Northern California coast. When Spanish explorers and missionaries arrived in the late 18th century, the Ohlone inhabited the ...

people as evidenced by the

grinding slab 250px, Stone slab in east-central California used to grind acorns In archaeology, a grinding slab is a ground stone artifact generally used to grind plant materials into usable size, though some slabs were used to shape other ground stone artifa ...

which forms half of the entry gate of to the rustic mansion on site. This log-style house was built in 1908 by the Honorable James R. Welch, Superior Court Judge for

Santa Clara County Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 United States Census, 2020 census. Santa Clara County and neighboring Sa ...

as a summer retreat for his family. The judge added orchards and modified a

sag pond A sag pond is a body of fresh water collected in the lowest parts of a depression (geology), depression formed between two sides of an active geologic fault, strike-slip, transtensional or normal fault zone. Formation A sag pond is formed along ...

into a decorative pond with a waterfall. In the 1956 the property was purchased by "America's Uranium King", Vernon J. Pick, who established a 200-person electronics company on site and named it Walden West after the cabin by a pond in

Henry David Thoreau Henry David Thoreau (July 12, 1817May 6, 1862) was an American naturalist, essayist, poet, and philosopher. A leading Transcendentalism, transcendentalist, he is best known for his book ''Walden'', a reflection upon simple living in natural su ...

's book

Walden ''Walden'' (; first published in 1854 as ''Walden; or, Life in the Woods'') is a book by American transcendentalist writer Henry David Thoreau. The text is a reflection upon the author's simple living in natural surroundings. The work is part ...

. Sanborn County Park was purchased in the late 1970s in an expansionary era of the

under the leadership of Robert Amery and Charles Rockwell. A series of land acquisitions throughout the county, with the intention to develop a greatly expanded set of county parks emphasizing large land area and low intensity uses. The Sanborn County Park master plan was developed in this era. The county retained Earth Metrics Inc. to prepare an Environmental Impact Report (EIR) for the land use change, pursuant to requirements of the

California Environmental Quality Act The California Environmental Quality Act (CEQA) is a California statute passed in 1970 and signed in to law by then-Governor Ronald Reagan, shortly after the United States federal government passed the National Environmental Policy Act (NEPA), t ...

. Fairly soon thereafter the County

Board of Supervisors A board of supervisors is a governmental body that oversees the operation of county government in the U.S. states of Arizona, California, Iowa, Mississippi, Virginia, and Wisconsin, as well as 16 counties in New York. There are equivalent agenc ...

approved the park plan and began development of necessary road and trail improvements. From 1976 to 2010 the main house was the site of the Sanborn Park Hostel, entirely renovated by volunteers, which was proud to charge the lowest rate of any

hostel A hostel is a form of low-cost, short-term shared sociable lodging where guests can rent a bed, usually a bunk bed in a dormitory, with shared use of a lounge and sometimes a kitchen. Rooms can be mixed or single-sex and have private or shared b ...

in the United States ($14/night at the time of closing).Remembering Sanborn Park Hostel
/ref>. The hostel was forced to close in the face of increasing insurance costs and reduced international travel after

9/11 The September 11 attacks, commonly known as 9/11, were four coordinated suicide terrorist attacks carried out by al-Qaeda against the United States on Tuesday, September 11, 2001. That morning, nineteen terrorists hijacked four commercial ...

Sanborn Science and Nature Center

Opened in 1982, the Youth Science Institute - Sanborn Science and Nature Center is a science and nature education facility operated by the Youth Science Institute. The center features live animals found in the

earthquake An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from ...

and

geology Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ear ...

exhibits, an

arthropod Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...

zoo and a regional plant garden. The center offers nature and science school and group programs, after-school science and summer camp programs. The center hosts an annual Insect Fair in May.

Overview for hikers

Exposed on the steep canyon eastern slopes of the Santa Cruz Mountains, Sanborn County Park has one of the coolest summer climates of Santa Clara County's parks. Towering redwood forests add to this eastern slope exposure in keeping hiking

trail A trail, also known as a path or track, is an unpaved lane or small road usually passing through a natural area. In the United Kingdom and the Republic of Ireland, a path or footpath is the preferred term for a pedestrian or hiking trail. Th ...

s comfortable in the heavy use period, from June to September; moreover, there are abundant

mixed forest Temperate broadleaf and mixed forest is a temperate climate terrestrial habitat type defined by the World Wide Fund for Nature, with broadleaf tree ecoregions, and with conifer and broadleaf tree mixed coniferous forest ecoregions. These for ...

locales having

Coast live oak ''Quercus agrifolia'', the California live oak, or coast live oak, is a highly variable, often evergreen oak tree, a type of live oak, native to the California Floristic Province. It may be shrubby, depending on age and growing location, but is ...

Pacific madrone ''Arbutus menziesii'' or Pacific madrone (commonly madrone or madrona in the United States and arbutus in Canada), is a species of broadleaf evergreen tree in the family Ericaceae, native to the western coastal areas of North America, from Bri ...

Big leaf maple ''Acer macrophyllum'', the bigleaf maple or Oregon maple, is a large deciduous tree in the genus '' Acer''. It is native to western North America, mostly near the Pacific coast, from southernmost Alaska to southern California. Some stands are al ...

and

Tanbark oak ''Notholithocarpus densiflorus'', commonly known as the tanoak or tanbark-oak, is a broadleaf tree in the family Fagaceae, and the type species of the genus ''Notholithocarpus''. It is native to the far western United States, particularly Orego ...

. The park features the first segment of the regional

Bay Area Ridge Trail The Bay Area Ridge Trail (Ridge Trail) is a planned multi-use trail along the hill and mountain ridgelines ringing the San Francisco Bay Area, in Northern California. Currently, have been established. When complete, the trail will connect ov ...

in Santa Clara County, which extends along the ridge of the Santa Cruz Mountains to become the

Skyline-to-the-Sea Trail The Skyline-to-the-Sea Trail is a 29.5-mile (47.2-kilometre) hiking trail that descends from the ridge of the Santa Cruz Mountains in California to the Pacific Ocean, passing through Castle Rock State Park and Big Basin Redwoods State Park. Bi ...

, which continues to the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

. This Bay Area Ridge Trail ultimately circumnavigates the entire Bay Area at a length of . The Sanborn and San Andreas trails ascend the eastern mountain slope, eventually joining the Cactus to Clouds Trail (AKA Skyline Trail) and

. Summit Rock, which is an established

rock-climbing Rock climbing is a sport in which participants climb up, across, or down natural rock formations. The goal is to reach the summit of a formation or the endpoint of a usually pre-defined route without falling. Rock climbing is a physically and ...

venue offers a panoramic outlook over Saratoga and the South Bay, lies at the upper limit of the park, but is readily reached from the Skyline Boulevard side. At the southeastern corner of Sanborn County Park sits Lake Ranch Reservoir, an attractive tiny mountain lake, accessible via either a steep canyon trail at the terminus of Sanborn Road, or by way of a longer, more level trail originating at Black Road. The latter trail, which sinuates high up along the flanks of Lyndon Canyon, is a lightly used trail, but extremely lush and forested; it crosses numerous small

riparian zone A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks ar ...

s, whose creeks tumble into the steep-sided canyon, originally formed by 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 ...

. Shorter, less strenuous trails extend through the redwood stands and along creeksides within the lower reaches of Sanborn County Park.

Vegetation

Besides the tree

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

noted above, the park contains a variety of native plants, first surveyed in the Earth Metrics EIR. Examples of this

flora Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. E ...

are: * Blue elderberry, ''Sambucus mexicana'' * California maidenhair fern, ''Adiantum jordanii'' * California mugwort, ''Artemisia douglasiana'' *

California poppy ''Eschscholzia californica'', the California poppy, golden poppy, California sunlight or cup of gold, is a species of flowering plant in the family Papaveraceae, native to the United States and Mexico. It is cultivated as an ornamental plant f ...

, ''Eschscholzia californica'', the state flower * Elk clover, ''Aralia californica'' * Flowering currant, ''Ribes sanguineum'' * Miniature lupine, ''Lupinus bicolor'' *

Miner's lettuce ''Claytonia perfoliata'' ( syn. ''Montia perfoliata''), also known as miner's lettuce, Indian lettuce, winter purslane, or ''palsingat'' (Cahuilla), is a flowering plant in the family Montiaceae. It is an edible, fleshy, herbaceous, annual plan ...

, ''Claytonia perfoliata'' *

Poison oak Poison oak refers to two plant species in the genus ''Toxicodendron,'' both of which can cause skin irritation: *''Toxicodendron diversilobum'' or Western poison oak, found in western North America *''Toxicodendron pubescens ''Toxicodendron pub ...

, ''Toxicodendron diversilobum'' * Slender tarweed, ''Madia gracilis'' * Sticky cinquefoil, ''Potentilla glandulosa'' *

Toyon ''Heteromeles arbutifolia'' (; more commonly by Californian botanists), commonly known as toyon, is a common perennial shrub native to extreme southwest Oregon, California, and the Baja California Peninsula. It is the sole species in the genus ...

, ''Heteromeles arbutifolia''

Geology

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 ...

runs directly under the park. The entrance station and main parking lots are on the

North American Plate The North American Plate is a tectonic plate covering most of North America, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores. With an area of , it is the Earth's second largest tectonic plate, behind the Pacific ...

. As you walk uphill across the broad sloping lawn you are crossing the

fault zone In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic ...

. The fault is not visible below your feet as it is covered by an

alluvial fan An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but a ...

of material that have eroded from the mountain. Once you reach the kiosk at the bottom of the campsite path you have crossed over to 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 ...

. In terms of

fault block Fault blocks are very large blocks of rock, sometimes hundreds of kilometres in extent, created by tectonic and localized stresses in Earth's crust. Large areas of bedrock are broken up into blocks by faults. Blocks are characterized by rela ...

s you parked the car on the

New Almaden Block New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz (South Korean band), The Boyz Albums and EPs * New (album), ''New'' (album), by Paul McCartn ...

which featured rocks of the

Franciscan Complex The Franciscan Complex or Franciscan Assemblage is a geologic term for a late Mesozoic terrane of heterogeneous rocks found throughout the California Coast Ranges, and particularly on the San Francisco Peninsula. It was named by geologist Andrew ...

. You are now standing on the

Salinian Block The Salinian Block or Salinian terrane is a geologic terrane which lies west of the main trace of the San Andreas Fault system in California. It is bounded on the south by the Big Pine Fault in Ventura County and on the west by the Nacimiento Fau ...

which features sandstones of the

Vaqueros The ''vaquero'' (; pt, vaqueiro, , ) is a horse-mounted livestock herder of a tradition that has its roots in the Iberian Peninsula and extensively developed in Mexico from a methodology brought to Latin America from Spain. The vaquero became t ...

and

San Lorenzo San Lorenzo is the Italian and Spanish name for Lawrence of Rome, Saint Lawrence, the 3rd-century Christian martyr, and may refer to: Places Argentina * San Lorenzo, Santa Fe * San Lorenzo Department, Chaco * Monte San Lorenzo, a mountain on t ...

formations. Subtle evidence for earthquake activity may be found at numerous locations within the park as described in USGS publication "''Where's the San Andreas Fault? A Guidebook to Tracing the Fault on Public Lands in the San Francisco Bay Region''", chapters 5 and 6. The guide shows where to spot evidence of offset drainages,

fault scarp A fault scarp is a small step or offset on the ground surface where one side of a fault has moved vertically with respect to the other. It is the topographic expression of faulting attributed to the displacement of the land surface by movement al ...

stream capture Stream capture, river capture, river piracy or stream piracy is a geomorphological phenomenon occurring when a stream or river drainage system or watershed is diverted from its own bed, and flows instead down the bed of a neighbouring stream. ...

shutter ridge A shutter ridge is a ridge which has moved along a fault line, blocking or diverting drainage. Typically, a shutter ridge creates a valley corresponding to the alignment of the fault that produces it. Shutter ridges occur exclusively at strike- ...

s, and

s as you venture through the park.

References

External links

Sanborn County Park Official Site

Sanborn County Park Guide Map

Sanborn County Park Walk In Campground Guide Map

Sanborn Science and Nature Center
{{coord, 37, 14, 30, N, 122, 5, 15, W , region:US-CA_dim:4000 , display=title County Parks in Santa Clara County, California Regional parks in California Nature centers in California Bay Area Ridge Trail