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Ayres Natural Bridge, Converse County, Wyoming, USA
USA

The Ayres Natural bridge is a true natural bridge, undercut by an active stream.  It spans 150 feet over the stream at a height of 50 feet, the bridge itself approximately 20 feet thick.

Accessible just off Interstate 25 west of Douglas, Wyoming, the Ayres Natural Bridge and Ayres Natural Bridge Park are of geologic and historic interest.  LaPrele Creek once made a long bend around an outcrop of very old sedimentary rock (300 million years old!) until the creek's upstream and downstream erosion of the ridge cut all the way through and created a natural passage - a natural bridge - through which the stream now flows.

Though only a few miles from the famous Oregon Trail, along which numerous emigrants traveled west during the pioneer days, the bridge was difficult to access.  Only a few early explorers as well as a handful of California gold rush miners left records of having passed.  A modern road now provides easy access to the bridge and public park.

Copyright: John roberts
Type: Spherical
Resolution: 18456x9228
Chargée: 17/09/2011
Mis à jour: 10/06/2014
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Tags: geology; natural bridge; rock arch; public lands; outdoors; stream
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The United States is one of the most diverse countries on earth, jam packed full of amazing sights from St. Patrick's cathedral in New York to Mount Hollywood California.The Northeast region is where it all started. Thirteen British colonies fought the American Revolution from here and won their independence in the first successful colonial rebellion in history. Take a look at these rolling hills carpeted with foliage along the Hudson river here, north of New York City.The American south is known for its polite people and slow pace of life. Probably they move slowly because it's so hot. Southerners tend not to trust people from "up north" because they talk too fast. Here's a cemetery in Georgia where you can find graves of soldiers from the Civil War.The West Coast is sort of like another country that exists to make the east coast jealous. California is full of nothing but grizzly old miners digging for gold, a few gangster rappers, and then actors. That is to say, the West Coast functions as the imagination of the US, like a weird little brother who teases everybody then gets famous for making freaky art.The central part of the country is flat farmland all the way over to the Rocky Mountains. Up in the northwest corner you can find creative people in places like Portland and Seattle, along with awesome snowboarding and good beer. Text by Steve Smith.