San Bruno Mountain is a fault-block horst in northern San Mateo County, California; its northern slopes rise in San Francisco. It is surrounded by San Francisco Bay and the cities of Brisbane, Colma, Daly City, and South San Francisco, and has played an important role in the history of all these communities.
Aerial view of San Bruno Mountain from San Francisco Bay overlooking part of Brisbane.
Aerial panorama of San Bruno Mountain and South San Francisco's Sign Hill
Topographic rendering done in 1869 showing trees in the ravines
Fog rolling over San Bruno Mountain near the central radio/television antennae.
San Mateo County, California
San Mateo County, officially the County of San Mateo, is a county in the U.S. state of California. As of the 2020 census, the population was 764,442. Redwood City is the county seat, the third-most populated city in the county after Daly City and San Mateo.
Image: Mount Diablo from SF Bay Discovery Site 10 2 2011 4 24 09 PM
Image: San Mateo County government center
Image: Año Nuevo State Reserve
The Santa Cruz Mountains cross through San Mateo County. In comparison to the rest of the county, the area is quite rural and forested.