Scott Thybony has been writing and recording commentaries for KNAU, Arizona Public Radio, for several years. He’s a former river guide and archeologist who’s written several books, including Official Guide to Hiking the Grand Canyon, Burntwater, and most recently, The Incredible Grand Canyon. His articles have appeared in National Geographic, Smithsonian, Outside, and several other publications. Scott Thybony’s interviewed everyone from astronauts to medicine men, and he’s lived with the Navajo in the American Southwest and the Inuit in the Canadian Arctic. He lives and writes in Flagstaff.