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 A rainstorm causes flash floods that spill over the cliffs above the Colorado River in the Grand Canyon. An aerial view of Eleven Mile Reservoir and State Park at 8,600 ft. in the Rocky Mountains outside of Denver, with Pikes Peak in the background. An aerial view of Pikes Peak in the Rocky Mountains. A view of Dillon Reservoir in the Rocky Mountains outside of Denver, from a commercial jet. Denver International Airport from the tarmac. The Rocky Mountains outside of Denver. The Rocky Mountains outside of Denver. The Rocky Mountains outside of Denver. The distinctive Denver International Airport from the tarmac. Denver International Airport in winter. Floating along a cliff in the Grand Canyon. Diamond Peak from a raft on the Colorado River. A Colorado River scene. A mountain range with a dusting of snow in Southwest Colorado. A ground squirrel in Rocky Mountain National Park. Floating in Marble Gorge. Tapeats Creek meeting the muddy Colorado. A river runner enjoying the view from the granaries in the cliffs at Nankoweap. Lake Mojave on the Colorado River below Lake Mead. The Western edge of the Grand Canyon Plateau, with Lake Mead in the distance. The Colorado River in the Grand Canyon. A side-canyon of the Grand Canyon. The central part of the Grand Canyon, with Hermit Rapid in sight. The central part of the Grand Canyon. The Grand Canyon shrouded in clouds. The North Rim of the Grand Canyon. Marble Gorge of the Grand Canyon, showing Nankoweap delta in the lower portion of the photograph. Marble Gorge of the Grand Canyon, showing Nankoweap delta in the lower portion of the photograph. Marble Gorge of the Grand Canyon, showing Nankoweap in lower left. Marble Gorge of the Grand Canyon, showing Tatahatso and Small Points, Buck Farm and Saddle Canyons, and President Harding Rapid.

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