Join photographer/filmmaker Pete McBride and adventure writer Kevin Fedarko on an epic quest, on foot, through the entire length of the Grand Canyon—not “rim to rim” as has been tackled by many—but 750 miles “end to end.” More people have walked on the moon than have completed this treacherous journey! Hiking over 100 days, Pete and Kevin traversed mostly along the goat trail, through slot canyons, blinding sun, and snow. Part sufferfest, part glorious trek, their expedition sheds light on the health and future of this national treasure and invites us to contemplate the value of wild spaces.