Notes from Hirondelle

The Silverado Trail isn't its own appellation. It's a road through five of them. Here's the geology behind the wineries that line it, and the ground Clos du Val has farmed since 1972.  

Long before manicured vineyards adorned the valley, the Silverado Trail cut through pastureland. Tracing a much older path through Napa Valley, the Silverado Trail connected the valley to silver mi...