Free Solo is the riveting documentary of Alex Honnold's record-setting free solo climb in Yosemite National Park. Free solo climbing is a type of rock climbing completed without the aid of ropes or safety gear. Alex Honnold is a famous free soloist climber with a lifelong dream of climbing El Capitan without a rope. Expert photography and story-telling combine to tell Alex's story and document his historic feat of climbing the 3,200-foot high wall known as El Capitan.