From the maker of "Everest" comes a powerful and cuationary film about the threat to one of America's most iconic landscapes... Grand Canyon Adventure: River at Risk follows the great Colorado River as it reveals the most pressing environmental story of our time-the world's growing shortage of fresh water. Join environmental advocates Robert F. Kennedy, Jr and Wade Davis as they travel deep into the Grand Canyon and down its river on a thrilling ride through raging rapids and breathtaking canyons. With stunning photography and sweeping areial shots, the renowned filmmakers capture all the majesty of the Colorado and the Grand canyon in the largest film format ever made. Narrated by Robert Redford with music by the Dave Matthews Band. Running time: 45 minutes. Originally made for IMAX.