Film · Documentary
Last of the Great Unknown (2012)
★ 8.0 · 1 votesIMDb★ 7.1 · 24 votes22 minDocumentary2012
The story of Grand Canyon's hidden slot canyons, the canyoneers who systematically explored their drainages, and the secrets hidden deep within their walls.
- Director
- Dan Ransom
- Country
- United States
- Language
- English
- Release date
- April 26, 2012
Cast
- Bill FormanekSelf
Todd MartinSelf- Dave NallySelf
- Rich RudowSelf
- Guy SmithSelf
