This 425+ acre open space, named for a low-grade coal mine opened in 1855 and buried by a landslide in 1890, comprises land this is part of the Portola Valley Ranch and Blue Oaks developments. While privately owned, this land was preserved as open space in perpetuity and its trails are open to the public.
Location: Google Maps Link
Park Website: Coal Mine Ridge Nature Preserve
Directions: TBD
Additional Information: Participants should bring water, sunscreen, sturdy shoes, lunch and normal precautions against poison oak exposure (work gloves, long sleeved shirts and long pants). The Trail Center provides tools, training, gloves, and refreshments after the workday.