Cast
Two journalists traverse the Grand Canyon by foot, hoping this 750-mile walk will help them better understand one of America's most revered landscapes and the threats poised to alter it forever.
23 August 2019
22 April 2018
14 April 2001
20 November 2019
5 November 2014
17 June 2015
4 October 2017
15 July 2010
30 July 2014
18 March 2021
1 November 2019
10 October 2014
20 November 2013
14 June 2018
20 July 2016
22 June 2008
22 February 2018
19 April 2017
23 November 2018
8 February 2017
9 February 2019