Prime Solum

Prime Solum is a Napa Valley wine producer, established in 2009. Prime Solum's tasting room and Broken Rock Vineyard sit on Atlas Peak Road in the city of Napa, not in St. Helena. A 96-acre estate vineyard on Atlas Peak Road planted mostly to Cabernet Sauvignon, with Merlot, Cabernet Franc and Petit Verdot.

The vineyard's 600 to 700 foot elevation sits just under the 760-foot threshold for the official Atlas Peak AVA, so its wines are labeled Napa Valley rather than Atlas Peak. Founder Bill Hill, previously of William Hill Winery, opened Prime Solum's tasting room in June 2018; daughter Elana Hill now co-leads operations.

We have not found a published schedule for routine public tasting at Prime Solum. The wines are sold direct or through the trade, and any visit would be by arrangement, so contact the producer before planning one.

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