Grand Canyon: Top Photos

Two billion years of Earth's history cut open by a river

(2448 x 4288) Boaters on the Colorado River below Phantom Ranch pass by an outcropping of Vishnu Schist at the very bottom of the Grand Canyon. NPS Photo by Erin Whittaker. There are three different
(2448 x 4288) Boaters on the Colorado River below Phantom Ranch pass by an outcropping of Vishnu Schist at the very bottom of the Grand Canyon. NPS Photo by Erin Whittaker. There are three… © Grand Canyon National Park, CC BY 2.0, via Wikimedia Commons

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