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The story of Grand Canyon's hidden slot canyons, the canyoneers who systematically explored their drainages, and the secrets hidden deep within their walls.
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Vidplay
Vidplay
Original Title: Last of the Great Unknown
Production Year: 2012
Duration: 0h 22m
Production Country: United States of America
Quality: FHD
Language / Subtitle: English
Genre: Documentary
Director: Dan Ransom
Cast: Bill Formanek, Dave Nally, Guy Smith, Rich Rudow, Todd Martin
The story of Grand Canyon's hidden slot canyons, the canyoneers who systematically explored their drainages, and the secrets hidden deep within their walls.