Open Space

Borel Hill

Borel Hill

Borel Hill is the highest named point in San Mateo County. It is located in Russian Ridge Open Space Preserve and owned by the Midpeninsula Regional Open Space. Read More
Mount Umunhum

Mount Umunhum

Mount Umunhum the fourth highest peak in the Santa Cruz Mountains (elevation 3,486 ft) is situated in Santa Clara County in the Sierra Azul Open Space Preserve. Read More