Last of the Great Unknown (2012)
Trailer

Last of the Great Unknown

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

Release: Apr 26, 2012

Duration: 22m

Genres: Documentary

Country: United States of America

Quality: HD

Actors: Bill Formanek, Todd Martin, Dave Nally, Rich Rudow, Guy Smith

Director: Dan Ransom

IMDb: 8/10

Keywords:Last of the Great Unknown #sports#grand canyon