11 Must-See National Monuments outsideonline.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from outsideonline.com Daily Mail and Mail on Sunday newspapers.
SAN YNEZ VALLEY, Calif. – It's a bird! It's a plane! It's. a zipline! Soaring 400 ft in the air at 50+ mph, Highline Adventures reaches new heights with