The Grand Canyon is one of America's greatest and most recognized natural icons. Carved by the Colorado River in Arizona, the canyon is 277 miles long, up to 18 miles wide, and is mostly contained within the Grand Canyon National Park. Its preservation as a National Park dates back to the forward-thinking president Theodore Roosevelt, who certainly would have approved of the efforts made by the producers of this documentary in telling the incredible story of this natural wonder. We begin with the fist non-Native American expedition down the Grand Canyon led by Major John Wesley Powell in 1869; also we learn of Ellsworth and Emery Kolb, whose photography and filming publicized the canyon extensively during the early part of the 20th century. Then we move to the present day mixing the scenery with music and time-lapse photography to underscore why this park is grand. We view nature and wildlife as we explore the river and many vast landscapes, including Toroweep, a remote, little-visited area unknown to most. We meet tourists and wranglers who travel on saddled mules down towering cliffs. We travel on trails that have been used for thousands of years by tribes such as the Anasazi, an ancient people who lived in and around the canyon long before Spanish conquistadors came here. In Havasu Canyon, we learn the Havasupi have lived along the beautiful Havasu Creek for over 600 years, raising corn, beans and squash. We explore Lee's Ferry on the Colorado, the point of embarkation for virtually all the float trips down the river; then on the river we see the canyon walls looming overhead and the rapids help each runner feel the spirit of the first explorers.