In the spring of 1869, a thirty-five-year-old, one-armed Civil War veteran and self-taught scientist led an expedition down the Colorado River into the last uncharted territory in the United States. Ninety-nine days later, John Wesley Powell emerged from the Grand Canyon after one of the most daring journeys in American history. Transformed by his experience, Powell would forever change America's attitude toward the West. "Lost in the Grand Canyon" is an account of the dramatic quest to explore one of the most unforgiving, and breathtakingly beautiful, places on earth. Produced by Mark Davis; Joe Morton narrates, and Peter Coyote provides the voice of John Wesley Powell.

Friday, 7/21 from 3-4 a.m. ET