Last of the Great Unknown (2012)

Name: Last of the Great Unknown
Genre: Documentary
Released: 2012-04-26
Rating: 8
Cast: Bill Formanek, Todd Martin, Dave Nally, Rich Rudow, Guy Smith

Documentary

The story of Grand Canyon's hidden slot canyons, the canyoneers who systematically explored their drainages, and the secrets hidden deep within their walls.

Rating: 8 / 10 (1 votes)
Release date: April 26, 2012
Runtime: 22m
Language: English
Director: Dan Ransom
Status: Released