National Geographic Documentary Films has officially authorized production on an untitled feature-length documentary detailing the survival ordeal of mountaineer Aron Ralston. The project will be directed by Academy Award-winning filmmaker James Marsh, marking his return to non-fiction feature directing following 2011’s Project Nim.
Produced alongside Lumina-backed Magna Studios, the documentary centers on Ralston’s 2003 canyoneering accident in Utah’s isolated Bluejohn Canyon. While descending the slot canyon alone, a dislodged 800-pound boulder pinned Ralston’s right arm against the canyon wall, trapping him for six days. To escape the life-threatening situation, Ralston utilized a dull multi-tool to amputate his own forearm before rappelling down a 65-foot sheer wall to locate rescue assistance.
The non-fiction feature is built around Ralston’s personal video archives, incorporating never-before-seen footage recorded on his handheld camera throughout his six-day entrapment. The raw video entries detail his physical deterioration, personal reflections, and ultimate decision to free himself.
Ralston previously authored a 2004 memoir recounting the event, titled Between a Rock and a Hard Place. The autobiography was later adapted into the 2010 Searchlight Pictures theatrical film 127 Hours, directed by Danny Boyle and starring James Franco as Ralston. The dramatic adaptation earned six Academy Award nominations, including Best Picture, Best Actor for Franco, and Best Adapted Screenplay for Boyle and Simon Beaufoy.
Director James Marsh previously won the Academy Award for Best Documentary Feature for 2008’s Man on Wire, which chronicled tightrope walker Philippe Petit’s 1974 high-wire crossing between the World Trade Center towers. Marsh also helmed the 2014 biographical drama The Theory of Everything, which earned five Oscar nominations.
Carolyn Bernstein, Executive Vice President of National Geographic Documentary Films, oversees the project alongside Oliver Calleja, Senior Vice President of Non-Fiction at Magna Studios. The documentary is slated for a global release in 2027.
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