Last of the Great Unknown

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.

Details

Status

Released

Release date

April 26, 2012

Original language

English

Spoken languages

English

Countries

United States of America

Cast

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

Director

Dan Ransom

Budget

Not recorded

Revenue

Not recorded

IMDb

tt2591468