Few people have ever completed a thru-hike of the Grand Canyon, and now National Geographic explorers Kevin Fedarko and Pete McBride know why: The almost 800-mile hike quickly proved to be the most difficult undertaking of their lives. With no trail to follow, the two found themselves bushwhacking through dense brush and cacti, and moving up and down steep vertical terrain in scorching heat as they navigated their way through the canyon. Though they initially embarked on the hike as a way to raise public awareness of development issues threatening the iconic national park, the pair quickly found they had completely underestimated the difficulty of their journey and nearly quit in the first week. Join Fedarko and McBride as they comically recount their brutal adventure and shed light on the myriad of threats facing Grand Canyon National Park.
Header: The confluence of the Little Colorado and Colorado Rivers, an area considered sacred to Native Americans, is under consideration as the site of a billion-dollar development project.
PHOTOGRAPH BY L.ROMANO/ DE AGOSTINI/ GETTY