aerial photograph of California Highway 29 north of Calistoga, Napa County, California

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aerial photograph of California Highway 29 north of Calistoga,  Napa County, California; this highway with extensive switchbacks through the moutains connects Calistoga and Middletown
aerial photograph of California Highway 29 north of Calistoga, Napa County, California; this highway with extensive switchbacks through the moutains connects Calistoga and Middletown