Rising temperatures and a rugged landscape were complicating efforts Thursday to defeat a wildfire in rural Napa and Lake counties that grew to 4,300 acres overnight and remains only 30 percent contained.

California Department of Forestry and Fire Protection crews trudged into the rough terrain along Butts Canyon Road west of Lake Berryessa for the third day, working to cut containment lines around the massive Butts Fire that continues to engulf any remaining fuel.

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