On the National Park Service"s Founders Day, we"re here on the North Rim of Grand Canyon National Park in Arizona peering out at the stunning vista. Can you see the rectangular hole in the canyon wall near the top of the image? That"s Angels Window. Brave hikers can make their way up to the trail above it, but the window itself is best viewed from various points along the North Rim. Far down below is the Colorado River. Beginning about 6 million years ago, it gradually carved downward through countless layers of sedimentary, igneous, and metamorphic rock. The Colorado and its tributary streams continue to deepen and widen the Grand Canyon even today.
Happy anniversary to the National Park Service!
Today in History
More Desktop Wallpapers:
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A river runs through rice fields
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American goldfinch
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Gateway to America
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Clouds over the River of Grass
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Abraham Lake, Alberta, Canada
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Daintree Rainforest and Noah Beach, Queensland, Australia
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Protecting endangered giants
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Nazaré Lighthouse
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Shark Awareness Day
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High trekking season in Upper Mustang
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Happy World Laughter Day
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Winter solstice
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Tom Turkey takes Manhattan
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Crimson-rumped toucanet in the Refugio Paz de Las Aves, Ecuador
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Summer Olympics begin in Paris
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Crescent-tail bigeye fish, Great Barrier Reef, Australia
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Grand Canyon National Park turns 105
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Cousins Day
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National Umbrella Day
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Black Fell in England s Lake District
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World Penguin Day
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Balloon Ascension Day
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Surfer s paradise
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Coral Reef Awareness Week
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Whales in winter
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Modica, Sicily, Italy
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Umschreibung by Olafur Eliasson in Munich
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Here s looking Atchafalaya
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Monarch butterflies in Angangueo, Mexico
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Nothing plain about it