"But the river is our focus. We slice through Green Canyon, Cougar Canyon and Blue Canyon on the Lower Salmon, hitting rapids with names like Snowhole, Checkerboard, Bodacious Bounce, Sluice Box and The Slide. Much of area we see was once inhabited by tribes including the Nez Perce. This river provided food and life for them; today it’s one of the largest rivers in the continental United States without a dam on its mainstem. It flows for 425 miles through grassy mountains and charcoal-colored cliff walls in Idaho, dropping 7,000 feet as it goes."