After two decades of work, Jack London State Park is cutting the ribbon on a new ridge trail on the east slope of Sonoma Mountain. This land has never been open and accessible to the public before, meaning that hikers, cyclists and equestrians will all experience new breathtaking views of the Sonoma Valley. A community celebration at the park’s Beauty Ranch kicks off a day of exploration, including a full 13-mile hike led by Craig Anderson of LandPaths and others. If 13 miles sounds too daunting, don’t sweat it, as numerous turn-around points and family-friendly activities offer something for everyone. The new east slope ridge trail is unveiled on Saturday, March 14, at Jack London State Park, 2400 London Ranch Road, Glen Ellen. 10:30am. 707.938.5216.