https://youtu.be/cs8oxmx0QEc San Bruno Mountain is a horst fault-block mountain located in northern San Mateo County, California; with northern slopes rising in southern San Francisco. It is surrounded by San Francisco Bay and the cities of Brisbane, Colma, Daly City, and South San Francisco. Topped by a four mile long ridge, trails along its summit afford expansive views of the San Francisco Ba..

https://youtu.be/pndhtzydZW0 Milagra Ridge is a 275-acre (111 ha) open space park that is an isolated island ecosystem, located about 7 miles (11 km) south of San Francisco, between the cities of Pacifica and Daly City. It was first inhabited by the Ohlone indigenous people, and was later claimed by Spanish settlers and Mexican ranchers. The United States Army acquired the land in the late 1930s..