![Photo: Tommy Caldwell in the middle of the Dawn Wall](https://wp-cpr.s3.amazonaws.com/uploads/2019/06/tommy_caldwall_24_-_the_middle_of_the_dawn_wall_-_credit_brett_lowell_-_big_up_productions-1.jpg)
The world watched in January 2015 as rock climbers Tommy Caldwell and Kevin Jorgeson scaled the smoothest part of the 3,000-foot tall El Capitan rock in Yosemite National Park. The two became the first ever to free-climb the Dawn Wall. Their feat is now the subject of a new documentary from Boulder-based Sender Films, called "The Dawn Wall." Filmmaker Josh Lowell and Caldwell talked to Colorado Matters about the accomplishment and the film.