Northern CaliforniaBy: Jack Newcombe Illustrator: Stan SkandinskiThe landscape of monotony is elsewhere, Jack Newcombe writes, and the routes he traces through the vineyards, towns, and parkland of northern Californiaalong with the variegated pleasures to be explored en routebear the proof: Mud baths and wine tasting in Calistoga A view from the top at Mt. St. Helena Wine touring, the slow and selective way, in the Napa and Sonoma valleys A Beer Experience in Petaluma,