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Toadstool | by Alex Holzknecht
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Toadstool

At this place are a bunch of those really amazing rock formations.

 

It has something to do with "harder" rocks falling down onto softer ones. Wind and rain destroys the softer stone but leave a small stem - as the harder rock on top acts like an "umbrella".

 

At least that's what I remember! *LOL*

 

Or as wikipedia would say:

"Hoodoos are composed of soft sedimentary rock and are topped by a piece of harder, less easily-eroded stone that protects the column from the elements."

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Taken on February 11, 2010