Watch this unbelievable rock climbing video. Guy featuring in this video is Dan Osman. Dan Osman (February 11, 1963 - November 23, 1998) was an extreme sport practitioner, known for the dangerous sports of "free-soloing" (rock climbing without ropes or other safety gear) and "controlled free-falling" (falling several hundred feet from a cliff while relying on a safety rope), for which his record was over 1200 feet. He was known for living a bohemian lifestyle, rarely working, and living in a treehouse for months at a time. He was the star of several rock climbing videos, which brought free-soloing to a wider audience.