Last of the Great Unknown

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

Directed by Dan Ransom

Documentary

20120h 22m8.0

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.