Happy anniversary to the National Park Service! Aug 25, 2021

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.

© Tim Fitzharris/Minden Pictures

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Today in History

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Aug 25, 2022National Park Service Founders Day
Aug 25, 2023National Park Service anniversary
Aug 25, 2024National Park Service Founders Day
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