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Red River Gorge, Kentucky.

https://commons.m.wikimedia.org/wiki/File:Red_River_Gorge_-_Long_Wall_-_Rock_Wars_2a.jpg

Otter Cliff in Acadia National Park, Maine. 

Pixabay

Silver Mountain in Baraga, Michigan. 

Pixabay

Gibraltar Rock

 
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El Capitan in Yosemite National Park, California. 

https://it.m.wikipedia.org/wiki/File:Yosemite_El_Capitan.jpg

The Frankenjura in Bavaria, Germany.

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