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From National Geographic:
Filmmaker Taylor Graham and his team embark on a mission to document what remains of Arizona’s submerged Glen Canyon by kayak. Watch their 350-mile through-paddle unfold as part of a National Geographic Society-supported project focused on water management challenges in the Colorado River Basin. Activists, archeologists, scientists, government officials and members of the Navajo Nation all weigh in on the far-reaching effects of the dam that flooded Glen Canyon to create Lake Powell in 1963.