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Pontoon Rafting, Grand Canyon National Park, Arizona, 2006

Photo: Pontoon rafters on the Colorado River

Rafters aboard a motorized pontoon boat get a thorough soaking on the rain-swollen Colorado River in Arizona's Grand Canyon National Park. Each year, some 22,000 visitors board rubber paddle rafts, oar-powered wooden dories, and luxury motorized rafts to ply this storied stretch of the Colorado's waters.

(Photo shot on assignment for, but not published in, "The Unexpected Canyon," January 2006, National Geographic magazine)

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Photograph by Michael Nichols

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