Randy Pench/ rpench@sacbee.com

John Tarantino and Lysa Williamsen of Greenbrae take in the view toward Lake County while they eat lunch last month on the Mount St. Helena summit near Calistoga. A 5-mile (one way) trail leads from a parking lot off Highway 29 to the summit, which at 4,339 feet is the second-highest peak in the region. The trailhead is not quite 9 miles north of Calistoga, in Robert Louis Stevenson State Park.

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