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
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Heron lies the Salton Sea
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J.R.R. Tolkien Day
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Guilin and Lijiang River National Park, China
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In Apia Harbor for Samoan Independence Day
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From garden to table?
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Tufa formations in Mono Lake, California
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Honoring those who served
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Legacy mural in Philadelphia
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Polar Bear Week
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Least chipmunk, Kootenai National Forest, Montana
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An improbable tribute for Towel Day
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Christmas Eve
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Polar Bear Week
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Pride Month
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Make your list and check it twice
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Tambopata National Reserve, Peru
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Back to the nest
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Fox kits
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National Park Week begins
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Halloween
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Wooden path to Kennedy Lake, Vancouver Island, Canada
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An island hopper s paradise
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Glacial rivers in Iceland
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Tom Turkey takes Manhattan
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Mitsumata blossoms
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National Mushroom Day
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International Talk Like a Pirate Day
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World Theater Day
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National Bird Day
Bing Wallpaper Gallery

