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Inside the Arch at Paul Bunyan's Woodpile, Juab County, Utah, USA
Utah

This unusual rock formation formed when magma invaded the cracks of an ancient collapsed volcano here in central Utah around 30 million years ago.  As the magma cooled, it contracted.  Generally it is easier for the cooling magma to contract vertically than it is to contract horizontally, so numerous cracks occur along the surface of the magma that propagate downward leading to the formation of columns seen here.  In this case, the ancient vertical columns were later turned on their side so that they resemble stacks of wood and give the place it's name, "Paul Bunyan's Woodpile."

Over many many years, the constant freeze/thaw of water within the rock joints has led to the erosion of parts of the wall of one of the "woodpiles" creating a natural arch.

Fellow 360 photographer, Florian Eggenberger, starts his 360 photo next to the arch.  Calvin Jones, Florian and I spent a great afternoon hiking up to the woodpile, taking several 360s there and along the way.

Copyright: John roberts
Type: Spherical
Resolution: 18860x9430
Uploaded: 25/04/2012
Updated: 10/06/2014
Views:

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Tags: nature; geology; outdoors; ancient volcano; natural wonder; desert; natural rock arch
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Florian Eggenberger
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More About Utah

Utah is a state located in the westcentral region of the United States of America.  Utah is the 13th largest state by area, ranks 34th by population and 10th by population density of the 50 United States.  Utah was the 45th state to be admitted into the Union, on January 4, 1896. Utah is landlocked, being bordered by the states of Idaho to the north, Wyoming to the northeast, Nevada on the west, Colorado on the east and Arizona to the south.  Utah is very mountainous and is a popular outing destination of the outdoorsman.  The state population is about 2.82M with 95% being Caucasian, 2.4% Asian, 1.7% Native American and 1.3% Black. The state capital and largest city is Salt Lake City.Source: wikipedia