In 1869, a one-armed geology professor launched four wooden boats into the Green River in Wyoming and disappeared into America’s last unmapped wilderness. John Wesley Powell had lost his right arm to a Confederate bullet at Shiloh — but where other wounded veterans found quiet lives, Powell found purpose. What lay ahead was the Colorado River system, a place so unknown that maps of the era simply labeled it: “Unknown.”

What followed was one of the most harrowing and consequential journeys in American exploration — weeks of life-threatening rapids, dwindling food, fraying nerves, and canyon walls rising thousands of feet above men who had no idea what was coming next. But Powell wasn’t simply trying to survive. He was trying to understand. He saw in those ancient stone walls a geological autobiography of an entire continent — and what he brought back from the depths of the Grand Canyon would change how America thought about its own land.

© 2026 Richard Sisk / All Rights Reserved

Music: Sisk/Suno

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