Caption Oak trees atop grassy hills in Sonoma County, California
Keywords Bay Area, CA, Calif., California, Clouds, Cloudy, Color, Colour, Forest, Grassland, Green, Hill, Hilly, Natural, Nature, Oak, Oak tree, Oak woodland, Plant community, Quercus, Rolling, Rolling hills, San Francisco Bay Area, Sonoma County, Tree, Trees, U.S., U.S.A., United States of America, US, USA, Weather
