"A few years after quitting his job to become a whitewater guide on the Colorado River, Kevin Fedarko was approached by his best friend, National Geographic photographer Pete McBride, with a vision to embark on an end-to-end traverse of the Grand Canyon--a journey that McBride promised, would be 'a walk in the park'. The ensuing ordeal revealed a place that was deeper, richer, and far more complex than anything the two men had imagined. A singular portrait of a sublime place, A Walk in the Park is a deeply moving plea for the preservation of America's greatest treasure"--