quarry on the southern shore are several arroyo willows (Salix lasiolepis). A few non-native Monterey pine (Pinus radiata) and Monterey cypress (Cupressus macrocarpa) have also been planted near the caretaker's residence. See also Islands of San Francisco Bay San Francisco Bay Area References Sources East Bay Regional Park District Islands of Contra Costa County, California Islands of San Francisco Bay Islands of Northern California Parks in Richmond, California Geography of Richmond, California Protected areas established in 1968 1968 establishments in California