The movie was filmed entirely in Utah at the following locations - Alpine Loop, Ashley National Forest, Leeds, Snow Canyon State Park, Ivins, St. George, Sundance, Timpanogos, Uinta National Forest, Wasatch-Cache National Forest, Zion National Park, Springdale, Utah, USA
According the book (CROW KILLER) Johnsons story commences in 1843 when he stepped of the steamer at St. Joseph, Missouri and ends with his death in Dec.1900. at the Veterans Hospital in Los Angeles.
Highly recommended reading for the survivalist and back to nature wanabe mountain man the book is based on fact but a lot of the information is gleaned from stories and legends around the character of John Johnson. Although I read a couple of unnecessarily harsh reviews of the book, never the less it is a totally absorbing tale of an American legend and long since dead lifestyle.
Zion National Park, Springdale, Utah, USA