In 2007, Sender Films
began shooting interviews with rock climbers for a then-unnamed documentary about Yosemite National Park. At the time, the Boulder-based production house was already well-established as climbing filmmakers go, with four full-length movies and innumerable shorts to its credit. (It's since added two more features and a well-received TV series to that count, and helped shoot a 60 Minutes special on renowned ropeless climber Alex Honnold
.) But its new project is its longest and most involved yet, encompassing seven years of work, multiple trips to Yosemite, and numerous delays.
On September 11, Sender will premiere the final product at Boulder's Chautauqua Auditorium at Reel Rock 9, the latest iteration of the annual climbing film show put on jointly with New York's Big UP Productions. Titled Valley Uprising, the film tells the story of the counterculture of climbers who helped make Yosemite the cradle of the sport in America.
See also: Reel Rock 8's Climbing Films Leave Audiences With a Lot to Digest