Muir Hanna Vineyards . Every so often we stumble upon a very special winery and this is certainly one of those. They are one of the very few wineries in the Napa Valley who grow and make their wine locally but have an open to the public tasting room located elsewhere. Their tasting room is located in the historical downtown of Murphys, California about 4 hours east of the Napa Valley in the Sierra Nevada foothills. Once you find out more history about this winery, this location makes a lot of sense as Murphys is somewhat on the way to Yosemite National Park and family members used to live in Tuolumne county. This is a completely family owned and operated winery from the vineyard management, to the winemaking to the marketing and distribution of their wines.