aerial photograph of drilling a geothermal well at the Geysers, the largest group of geothermal power plants in the world, Sonoma and Lake County, California

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aerial photograph of drilling a geothermal well  at the Geysers, the largest group of geothermal power plants in the world, Sonoma and Lake County, California
aerial photograph of drilling a geothermal well at the Geysers, the largest group of geothermal power plants in the world, Sonoma and Lake County, California