In 2022, Sonoma's iconic Chalk Hill Estate will celebrate 40 years since founder Fred Furth first spotted from his airplane the property's natural amphitheater on the eastern side of the Russian River Valley. The property - and then in 1983, the AVA - were named for the area's white, powdery and volcanic soils. Though a sub-AVA of the Russian River Valley, Chalk Hill is warmer because it sits above the cooling fog experience throughout the rest of the Russian River.
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