        National Geographic Photo of the Day: Grand Canyon Spill

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Photo of the Day   July 26, 2007    PREVIOUS [4]   |  NEXT [5]
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Arizona, 2007 Photograph by Michael K. Nichols A ribbon of water spills
down a cliff in Grand Canyon National Park in Arizona.

The canyon's rock strata, laid bare over the past six million years by
the rushing Colorado River, details nearly two billion years of North
America's geologic history. At 277 miles (446 kilometers) long, 18
miles (29 kilometers) across at its widest, and 6,000 feet (1,829
meters) down at its deepest, it is one of Earth's largest canyon
systems.

(Text adapted from and photo shot on assignment for, but not published
in, "The Unexpected Canyon," January 2006, National Geographic
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