High Valley AVA is located in the eastern part of Lake County. True to its name, the valley is situated on high elevations ranging from 1,600 feet (490 m) to 3,000 feet (910 m), but it actually encompasses two distinct growing regions, the valley floor and the hillsides. The cool marine breezes are consistently sifting into the valley, keeping the valley cooler than the other appellations in Lake County. Red volcanic soils can be found on the hillsides while alluvial fans and benches on the valley floor provide well-drained beds for the vines.

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