Hikes & Events

hikes and events Hike Schedule


trail information Read morePhoto: Susan Myrland


Los Peñasquitos Ranch House Read more


“The Giddy Rise of the Environmentalists”: Corporate Real Estate Development and Environmental Politics in San Diego, California, 1968–73

Changes in US real estate development during the 1960s and early 1970s were a catalyst for popular environmentalism. New flows of capital between builders and investors, including direct investment by Fortune 500 companies and the growthof the first nationwidehome-buildingfirms,produced a historic peak in US construction between 1969 and 1973. A case study of San Diego, California, indicates that these changes played a key role in the era’s burst of environmental reform. Read more about the rise of the environmental movement in San Diego around the fight to save our Peñasquitos Canyon ...

Pieces of History: Prehistory & History of Rancho Peñasquitos

This recently published book compiles the archaeological and historical reports based on more than 20 years of archaeological digs and investigations at Rancho Santa Maria de los Peñasquitos by three archaeologists (Steve Bouscaren, PhD; Susan Hector, PhD; and Lynne Christenson Newall, PhD.) and one historian (Steve Van Wormer, MS). Read more along with purchase details.

Lake Hodges Oakland Restoration

The Del Dios Habitat Protection League (DDHPL) is a group of local volunteers who are working to restore the native riparian habitat of Lake Hodges. Learn More about who we are and what we do, along with current projects, events and news.

The Friends of Penasquitos Canyon appreciates your donation.


About us

The Friends of Los Peñasquitos Canyon Preserve is a volunteer organization which has been protecting the preserve for more than 25 years. The Friends assist the city and county rangers through such activities as leading interpretive walks, performing wildlife and other scientific studies, removing invasive exotics and replanting with natives, installing kiosks, and coordinating Scout projects. Past scout projects have included building small bridges, installing interpretive signs, building and installing owl boxes, and restoring trails. The Board meets bi-monthly and welcomes new volunteers in any capacity.



There are many ways you can help care for your local nature preserves including Los Peñasquitos Canyon Preserve, Carmel Mountain, the Del Mar Mesa, and Black Mountain Parks.   Restoration Work Projects, Endangered Plant Surveys, Wildlife Surveys, Trail Building & Maintenance are among the many possible ways to volunteer.

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Links to local environmental groups, project reports, plant and animal lists.



Tracking Team

The Los Penasqusitos Tracking Team offers a number of classes in the art of wildlife tracking and naturalist skills development.

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Videos of nature conservation and outdoor recreation.

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Historic Adobe Ranch Tour

San Diego County Park docents lead a free guided tour of San Diego’s second oldest standing residence, Ranch Santa Maria de Los Peñasquitos at 11 a.m. on Saturdays and 1 p.m. on Sundays, lasting 45 minutes. See an historic Mexican era rancho with three foot thick adobe walls, settler and Indian artifacts and tour the grounds. The Ranch House is located on Canyonside Drive off Black Mountain Road near I-15 between Mira Mesa and Rancho Peñasquitos. See Thomas Bros. p. 1189 (C7)


Give to Save Our Oaks

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