Last of the Great Unknown

Name: Last of the Great Unknown
Director: Dan Ransom
Released: 2012-04-26
Duration: 22 min
Rating: 8
Cast: Bill Formanek, Todd Martin, Dave Nally, Rich Rudow, Guy Smith

8.0

April 26, 2012

22m

Documentary

Overview

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