The caves at Byington Vineyard in Los Gatos sit 40-feet below the winery. Photo courtesy of Byington Vineyard
Byington winemaker Andrew Brenkwitz checks on wine aging in the winery's cave. Photo courtesy of Byington Vineyard.
The 50-foot-long Cave at Testarossa has sandstone walls and barrel vaulted ceiling. Photo courtesy of Testarossa Winery.
Gary Guglielmo opens the door to his family's historic wine cellar, under the house he and his brothers grew up in. Photo courtesy of Mary Orlin.