Knights Valley is only a few miles north of Napa Valley, yet when it comes to its wine identity, it might as well be in Nevada. It's a beautiful winegrowing area, home to about 2,000 acres of vineyards and one of California's greatest wineries. Yet many wine lovers have never heard of it, much less know where it is, tucked in the southeast corner of Sonoma County at the base of Mount St. Helena. Mention Knights Valley to most and you'll likely face a quizzical stare. Wine Spectator senior editor James Laube explains.