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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Ski touring in Austria
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Salar de Uyuni salt flats in Bolivia
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Life carries on, rising from a ship s skeleton
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The Tour de France begins
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Ruins of a royal temple
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Arbor Day
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New York City Marathon
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It s superb owl Sunday
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Shining like Klondike gold
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Fiesta at Siesta
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Hohenzollern Castle near Stuttgart, Germany
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Deep in the North Woods wetlands
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Longtailed widowbird at Rietvlei Nature Reserve, South Africa
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The smoke before the bonfire
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Sea lion in a kelp forest, Baja California, Mexico
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The cycle begins anew
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Chapada dos Veadeiros National Park shines
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Porthcawl Lighthouse, Wales, UK
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International Dark Sky Week
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The lemurs of Madagascar
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National Park Week begins
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Santorini, Greece
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Anniversary of the British Museum
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World Nature Conservation Day
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Looking back at Yellowstone, 30 years after the fires
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Road to Hana, Maui, Hawaii
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Tree of many colors
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Put your flippers in the air…
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Sky island views
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Grand Teton National Park
Bing Wallpaper Gallery

