Reviewers from Letterboxd note that while the location footage of the Grand Canyon is beautiful, it is often undermined by unconvincing blue-screen shots and rear-projection techniques.
For a modern look at the rugged Utah landscapes where the film was shot, check out this freeride footage: Ten Who Dared
While it serves as a "glorified orientation film" for the Grand Canyon, is largely remembered as a flawed effort that fails to capture the true peril of Powell's journey. Reviewers from Letterboxd note that while the location
John Beal as Major Powell, Brian Keith as Bill Dunn, and James Drury as Walter Powell. Many viewers felt the film focused too much
Many viewers felt the film focused too much on geography and mapmaking at the expense of character depth. The conflicts between the men often feel perfunctory or resolved too quickly.
A group of ten men venture into the uncharted Colorado River. The journey is fraught with internal conflict, mutiny, and the physical dangers of the rapids. Critical Review Highlights